What is with you guys? If it works for him, it works. For crying out loud...
@OP We'll need your motherboard's specs. Which Bluestar motherboard is it?
Well... if he goes and buys a PCI-e graphics card and tries to put it into an AGP motherboard, it's not going to work for him.
If he buys a $200 graphics card and pairs it up with that 2.4 GHz pentium 4, it's not going to work for him (at least, it will work no better than a $50 graphics card).
Technology is not postmodern. Things either work or they don't.