Asus p5b-e ethernet problems

[willpower88]

I reciently built a new computer with the asus p5b-e motherboard. however, when i attempt to connect to the internet, it never seems to get a connection. All i get is that there is limited or no connectivity. The cable is plugged in the back and the lights do flash.... i don't know if this is my modem or my nic card problem. I really don't think that it is my modem because i have another computer and it connects just fine. Any help will be appreciated

 

[evongugg]

Please tell us if you have a router, DSL or cable.
Have you set up a new network connection with your computer with user name and password?

 

[willpower88]

for some reason it connected today.... idk now xfire won't load my friend's list wtf