Well if it where me, then I'd check it so see if it's up by doing
and then entering the root password when prompted. Then
and see what you get i.e. you should see eth0 and lo is so, then the system is seeing the ethernet card.
So from there, I'd be guessing if the ethernet card is talking to the router. You should normally have them in the same range i.e. if the router has the IP address set to 10.0.0.1 then I'd set the network card to 10.0.0.2 (or course you'd set it to whatever, but as I understand it, it still needs to be 10.0.0.*).
Or you could just try pinging the router with
don't forget you'd have to change the example IP address I've used to whatever the router is set to - if it's all set up for DHCP then I'm sorry I don't know - I'm using static IP's throughout!