NIC - Network interface card.
Windows 7 has many drivers that will work, but not all of them. Check in device manager and see if you have any yellow question marks. You may have to download the drivers on another computer and put them on a USB key to install them.
What did it display from the ipconfig /all, or would it not even let you do that? It should, nic or no nic.
I've installed the drivers and it's working. I'm typing on the same conputer I was talking about, Thanks!