Probably PCI Express...but you'd also need to buy a 939 processor with it, and it will be too expensive.
Agreed. With a 939 you are looking at around 800 bucks for a pc.
Mantra: My cost of the machine was 550. with an extra 40 I could get a nice thermal take case =[ And I have never had one of those cases catch fire.
One more thing. Stay away from 5900s especially the SE edition. They are horrible videocards. a 5600 can out perform one. The 5900s are the most bug infested cards I have ever seen.