Change your logon screen to an image of your choice and OEM information.
I have used both these programs in Win7 32 and 64bit
http://www.softpedia.com/progDownload/Windows-7-Logon-Background-Changer-Download-132876.html
http://www.softpedia.com/get/PORTABLE-SOFTWARE/System/System-Enhancements/WinBubbles-Lite.shtml