So I picked up an HP Compaq DC7600 SFF for free and everything else works but the built-in ethernet connector wasn't working. I tried looking for the ethernet drivers but I guess this computer is too old.
System Specs:
CPU: Pentium 4 640 3.20 GHz
HDD: Maxtor DiamondMax 10 80GB
RAM: Samsung 4 x 512MB DDR3
Ethernet/USB: Foxconn JFM38U1A-01U5-4F 59XDB 1000BT (Note: I wrote whatever the hell was on the interface)
Chipset: Intel G45
I also attached a picture of the I/O chip if that's important