I can definitely pick up a new video card, I just do not know if it will be enough!
Here is what I have (I am just listing what I see because I forget what is relevant):
Intel Pentium 4, Processor 550, 800 MHz FSB
Intel Motherboard D925XCV w/ PCI-E
Asus Extreme N6600 256 mb video card (PCI-E?)
500 Watt ATX power supply
Sound Blaster Audigy 2 ZS
1024 mb of RAM, not sure what make or model at this moment, but I can find out, if it matters.