New Ethernet Card But No Internet?

I recently acquired a new mobo to tide me over until I can get the spare money to order a new one (which probably won't be until after the first of the year) however, the board, while better than what I had, has some problems hence why I got it so "cheaply". The problems I had with it have been fixable/liveable with. Anyways, here's a description of my problem and some brief applicable system specs.

The ethernet port on this board was bad, knew that from purchase date. However I ordered a brand new card (10/100MB NIC PCI Ethernet Card), installed it, and the drivers all loaded, and the card is listed as working properly. I have no internet connection or network connection even listed. The way my system runs is as follows.

Computer/Ethernet Card -> Cat5 -> ASUS Router -> Cat6 -> ISP Router -> Outside

I have tried hard lining it direct from the ISP Router as well to no avail.I've even tried using the ipconfig.exe commands. Including /release, /flushdns, /renew. But, whenever I open the DOS panel with the command it just disappears in a millisecond.I know the PCI port on the board isn't bad because I literally just removed my USB expansion card from it to install this one. I even tried switching it with the other 2 PCI cards I have installed and they all work perfectly so it's not the PCI slot.