What video card should I pick up?

Here's my setup:



AMD Athalon XP 1800+

1.53 GHZ and 512 MB Ram.



OS: XP 64



I'm going to pick up an AMD Athalon XP 3200 processor, but I need to know what kind of video card to pick up. I'm looking for something that is fairly cheap on Ebay ($50-100) and can handle games like Bioshock.|||Check the bioshock website and make sure the card you get doesn't have any issues with that game. The more 'popular' the card, the more likely it won't be a problem. ATI or nVidia should suit you.|||You aren't running bioshock with that rig.|||All you need to figure out is if your motherboard is an AT or ATX....you can purchase any kind of video card. Theres many to choose from but it just depends on how much you wanna spend.|||New computer time.



edit:



NEW COMPUTER TIME. There is no way in hell that bioshock will run, even if you did bump up to an athlon 3200. The ram is another big issue i'd say at least put another 512 stick in there, and also a $100 vid card is going to be next to junk, at least with that game. The best card I can recommend for around that price is an nVidia Geforce 7600GT. It's a really solid performer, and it's very cheap. You'll need a PCI-express motherboard to run it.