Limited or no connectivity!

I have just formated 2 computers and installed windows XP Professional with SP2 and cant get connected to internet with both of them. Ive read many forums and tried everything I know to fix it but it still doesnt work.

Things ive done:

FIxed the SP2 Bug
Netsh commands
Release/renew
Disabled windows firewall
Restarted the computer many times
Restarted the router
Winsock Fix
Automatic IPs


It is very strange because i am connected to the internet right now with the same connection Im using with both computers and in this one it works perfectly.

Please help me, Im out of ideas!

Thanks

Kiskais

 

Can you tell us what connection you are using: router, modem, connection sharing? If hardware make and model would be useful.

 

Im using a router. The thing is I use the same cable for all 3 computers, only that when I connect it to the formated PCs it doesnt work.