Networks Epox-8NPAJ Networking issues

I recent bought a Epox-8NPAJ and im having some networking issues. Its an nForce4 mobo with intergrated Gigabit Lan. I am having problems connecting to some things over the internet. I can use the internet browser and Windows messenger, but when i try to connect with MSN 7.5 it jsut brings up an error every time i go to connect. I ran the checks on MSN 7.5 but all of the diagnostic tests come up fine, but when i try to sign in it wont have it. Windows Activation is another thing that seems to not be able to connect and is one of the more serious reasons why i need my internet connection to work. Ive tried installing the nForce 4 network drivers with and without the Firewall and other thing. Im downloading SP2 as we speak, as my windows disk is SP1. I tried reinstalling windows. That didnt help. Its not my network as my other computer works fine.

 

Have you tried a network card in it? Because it might be something blocking the connection from being made.