Windows XP PC's not connecting on a Small Office Network

[MikeB63]

I have replaced a Windows XP PC (SP2) on my office network with an new pc running Windows XP SP3.

The network is connected via a NetGear 16 port GB Switch with each pc assigned a static IP address.

The new PC connects to all my printers , the internet and a Mac on the network (tested by pinging all the equipment) but will not connect to the only other PC on the network which previously was not a problem.

To make matters more interesting the other PC on the network, will ping all the peripherals and the mac but does not ping the new pc.

Does anyone have any suggestions as to how to resolve this issue?

Regards,

Mike

[zelkea]

Could it be a firewall issue?

Here is a thread about problems with SP3's firewall if your interested.

http://www.asktheadmin.com/2008/04/windows-xp-sp3-enables-firewall-even-if.html

AJZ

[Tekkno]

Sounds like they may be on a different subnet, possibly one on the LAN and one on the WLAN? Are the IP's the same besides the last octet? i.e 192.168.1.xxx?