Computer not accessible on XP wireless LAN

[JonRose]

I have a wireless network with two computers using XP. Both are visible on both machines. One computer can access all the shared files on the other, but the second computer cannot access the first one at all "You might not have permission to access this network resource." The first computer is set to share, and the firewall is off. Both computers use dynamic IP with an ATT 2Wire wireless hub. What can I try?

 

[Guthro]

Are you working as "admin" on both machines ?
Have you tried setting the IPs manually rather than dynamically, maybe in the range 192.168.0.2 and 192.168.0.3. ?
Some routers like a name for each pc and also might require the mac code to be entered into a limited access table.

I realise this is an oldish post but sometimes things get missed.