Basically any discrete video card you can buy now will support DX9 and pixel shader 2.0. Hell, I think all of them should support pixel shader 3.0. The last line of cards that didn't support pixel shader 3.0 were the x800 series from ATI.
OT: My computer can't handle this game . Come on Valve, give me a PS3 port!
Huh. So all i need is some Ram. Neato.
I believe anyway. I think a Athlon 64 X2 4000+ fits. I suck at computer termonology though.