Hi I've got the virus that won't let me change my background, so I ran the registry and enabled desktop under properties again, etc.
There was also a mysterious icon on my desktop that said "setup1" that wouldn't delete (I'm assuming it was part of the virus), but once I restarted my computer it did delete.
But the problem is, now every time I restart my computer, whenever I run the task manager, I can see that a program called "prjsrv" is running, and even if I end it, it always comes back when I restart. I can't find the file anywhere and I don't know what it is but I think it's part of the virus I got. Here is my HiJackThis log; thanks!:

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 7:09:04 PM, on 10/13/2008
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)
Boot mode: Normal

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\Explorer.EXE
c:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
c:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
c:\Program Files\Common Files\Symantec Shared\ccProxy.exe
c:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe
c:\Program Files\Common Files\Symantec Shared\SPBBC\SPBBCSvc.exe
C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\ehome\ehtray.exe
C:\WINDOWS\RTHDCPL.EXE
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\Program Files\Hewlett-Packard\HP Boot Optimizer\HPBootOp.exe
C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
C:\Program Files\D-Link\AirPlus Xtreme G\AirPlusCFG.exe
C:\Program Files\Alpha Networks\ANIWZCS Service\WZCSLDR.exe
C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\WINDOWS\arservice.exe
C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe
C:\Program Files\Compaq Connections\5577497\Program\Compaq Connections.exe
C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
C:\Program Files\Bonjour\mDNSResponder.exe
C:\WINDOWS\eHome\ehRecvr.exe
C:\WINDOWS\eHome\ehSched.exe
C:\Program Files\Common Files\LightScribe\LSSrvc.exe
c:\Program Files\Norton Internet Security\Norton AntiVirus\navapsvc.exe
C:\WINDOWS\system32\nvsvc32.exe
C:\WINDOWS\system32\HPZipm12.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\Wacom_Tablet.exe
C:\Program Files\Viewpoint\Common\ViewpointService.exe
C:\Program Files\HP\Digital Imaging\bin\hpqSTE08.exe
C:\WINDOWS\system32\WTablet\Wacom_TabletUser.exe
C:\WINDOWS\system32\Wacom_Tablet.exe
C:\WINDOWS\system32\dllhost.exe
c:\Program Files\Common Files\Symantec Shared\Security Console\NSCSRVCE.EXE
C:\WINDOWS\eHome\ehmsas.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\wuauclt.exe
C:\WINDOWS\system32\wuauclt.exe
c:\PROGRA~1\NORTON~1\NORTON~1\navw32.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Symantec\LiveUpdate\AUpdate.exe
C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE
C:\Program Files\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Program Files\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Program Files\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Program Files\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Program Files\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Program Files\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Program Files\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Program Files\Symantec\LiveUpdate\LuCallbackProxy.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iehome&locale=EN_US&c=64&bd=PRESARIO&pf=desktop
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iesearch&locale=EN_US&c=64&bd=PRESARIO&pf=desktop
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iesearch&locale=EN_US&c=64&bd=PRESARIO&pf=desktop
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iesearch&locale=EN_US&c=64&bd=PRESARIO&pf=desktop
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.yahoo.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iehome&locale=EN_US&c=64&bd=PRESARIO&pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iesearch&locale=EN_US&c=64&bd=PRESARIO&pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iesearch&locale=EN_US&c=64&bd=PRESARIO&pf=desktop
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iesearch&locale=EN_US&c=64&bd=PRESARIO&pf=desktop
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iehome&locale=EN_US&c=64&bd=PRESARIO&pf=desktop
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iesearch&locale=EN_US&c=64&bd=PRESARIO&pf=desktop
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://ie.redirect.hp.com/svs/rdr?TYPE=3&tp=iehome&locale=EN_US&c=64&bd=PRESARIO&pf=desktop
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.local
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\PROGRA~1\MICROS~4\Office12\GRA8E1~1.DLL
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O2 - BHO: NAV Helper - {A8F38D8D-E480-4D52-B7A2-731BB6995FDD} - c:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O2 - BHO: hpWebHelper Class - {AAAE832A-5FFF-4661-9C8F-369692D1DCB9} - C:\WINDOWS\pchealth\helpctr\Vendors\CN=Hewlett-Packard,L=Cupertino,S=Ca,C=US\plugin\WebHelper.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: Norton AntiVirus - {C4069E3A-68F1-403E-B40E-20066696354B} - c:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O4 - HKLM\..\Run: [ehTray] C:\WINDOWS\ehome\ehtray.exe
O4 - HKLM\..\Run: [ftutil2] rundll32.exe ftutil2.dll,SetWriteCacheMode
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [AlwaysReady Power Message APP] ARPWRMSG.EXE
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [nwiz] nwiz.exe /install
O4 - HKLM\..\Run: [Recguard] C:\WINDOWS\SMINST\RECGUARD.EXE
O4 - HKLM\..\Run: [ccApp] "c:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [HPBootOp] "C:\Program Files\Hewlett-Packard\HP Boot Optimizer\HPBootOp.exe" /run
O4 - HKLM\..\Run: [Reminder] "C:\Windows\Creator\Remind_XP.exe"
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [D-Link AirPlus Xtreme G] C:\Program Files\D-Link\AirPlus Xtreme G\AirPlusCFG.exe
O4 - HKLM\..\Run: [ANIWZCSService] C:\Program Files\Alpha Networks\ANIWZCS Service\WZCSLDR.exe
O4 - HKLM\..\Run: [GrooveMonitor] "C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\QTTask.exe" -atboottime
O4 - HKLM\..\Run: [lphca78j0erat] C:\WINDOWS\system32\lphca78j0erat.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [] C:\Documents and Settings\Compaq_Administrator\Application Data\Adobe\Player.exe
O4 - .DEFAULT User Startup: Pin.lnk = C:\hp\bin\CLOAKER.EXE (User 'Default user')
O4 - .DEFAULT User Startup: PinMcLnk.lnk = C:\hp\bin\cloaker.exe (User 'Default user')
O4 - Global Startup: Compaq Connections.lnk = C:\Program Files\Compaq Connections\5577497\Program\Compaq Connections.exe
O4 - Global Startup: HP Digital Imaging Monitor.lnk = C:\Program Files\HP\Digital Imaging\bin\hpqtra08.exe
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~4\Office12\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_06\bin\ssv.dll
O9 - Extra button: Send to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~4\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: S&end to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~4\Office12\ONBttnIE.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~4\Office12\REFIEBAR.DLL
O9 - Extra button: Internet Connection Help - {E2D4D26B-0180-43a4-B05F-462D6D54C789} - C:\WINDOWS\PCHEALTH\HELPCTR\Vendors\CN=Hewlett-Packard,L=Cupertino,S=Ca,C=US\IEButton\support.htm
O9 - Extra 'Tools' menuitem: Internet Connection Help - {E2D4D26B-0180-43a4-B05F-462D6D54C789} - C:\WINDOWS\PCHEALTH\HELPCTR\Vendors\CN=Hewlett-Packard,L=Cupertino,S=Ca,C=US\IEButton\support.htm
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - C:\PROGRA~1\MICROS~4\Office12\GR99D3~1.DLL
O23 - Service: Apple Mobile Device - Apple Inc. - C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
O23 - Service: Automatic LiveUpdate Scheduler - Symantec Corporation - C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe
O23 - Service: Bonjour Service - Apple Inc. - C:\Program Files\Bonjour\mDNSResponder.exe
O23 - Service: Symantec Event Manager (ccEvtMgr) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Internet Security Password Validation (ccISPwdSvc) - Symantec Corporation - c:\Program Files\Norton Internet Security\ccPwdSvc.exe
O23 - Service: Symantec Network Proxy (ccProxy) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\ccProxy.exe
O23 - Service: Symantec Settings Manager (ccSetMgr) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
O23 - Service: COM Host (comHost) - Symantec Corporation - c:\Program Files\Norton Internet Security\comHost.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\1050\Intel 32\IDriverT.exe
O23 - Service: iPod Service - Apple Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: LightScribeService Direct Disc Labeling Service (LightScribeService) - Hewlett-Packard Company - C:\Program Files\Common Files\LightScribe\LSSrvc.exe
O23 - Service: LiveUpdate - Symantec Corporation - C:\PROGRA~1\Symantec\LIVEUP~1\LUCOMS~1.EXE
O23 - Service: Norton AntiVirus Auto-Protect Service (navapsvc) - Symantec Corporation - c:\Program Files\Norton Internet Security\Norton AntiVirus\navapsvc.exe
O23 - Service: Norton Protection Center Service (NSCService) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\Security Console\NSCSRVCE.EXE
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: Pml Driver HPZ12 - HP - C:\WINDOWS\system32\HPZipm12.exe
O23 - Service: Symantec AVScan (SAVScan) - Symantec Corporation - c:\Program Files\Norton Internet Security\Norton AntiVirus\SAVScan.exe
O23 - Service: Symantec Network Drivers Service (SNDSrvc) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe
O23 - Service: Symantec SPBBCSvc (SPBBCSvc) - Symantec Corporation - c:\Program Files\Common Files\Symantec Shared\SPBBC\SPBBCSvc.exe
O23 - Service: Symantec Core LC - Unknown owner - C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
O23 - Service: TabletServiceWacom - Wacom Technology, Corp. - C:\WINDOWS\system32\Wacom_Tablet.exe
O23 - Service: Viewpoint Manager Service - Viewpoint Corporation - C:\Program Files\Viewpoint\Common\ViewpointService.exe

--
End of file - 12423 bytes

Hi and welcome to daniweb,
I don't see the prjsrv" in your running processes during the scan, did you turn it off before the scan? Next time leave it there so we can see the location. I couldn't find any process by that name when searching.
Now you said this;

I've got the virus that won't let me change my background, so I ran the registry and enabled desktop under properties again, etc.

but you don't state any other things you have done in order to remove the virus. Doing a registry edit won't necessarily remove the virus, it just removes a "symptom" of the virus and doing a registry edit before eliminating the virus isn't advisable, especially when the removal of the virus may edit the registry again. Plus you say "the" virus that won't let you change your background...there are MANY DIFFERENT viruses or trojans that exhibit this symptom, not just one, so assuming it is just one virus is something you shouldn't do. Some infections require special tools for removal, we don't know that this isn't one of them because we don't even know the name of the virus.
What steps have you taken? Have you done any of the steps given by PhilliePhan HERE
With the exception of the Deckard Scanner, which can't be used so that step should be ignored until further notice, all of the other steps there should be completed followed by a fresh HJT scan. Also please note, if one of the scans says something will be removed or fixed when rebooted then please DO reboot the computer. Many infections cannot be removed until the reboot begins and other programs have not loaded up yet.
Do all of those steps given in PP's thread, if instructions say remove selected then do so.
After that post back here with ALL of the logs he notes.
Judy

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