DEFINITELY get a different power supply, antec, enlight ( a few others i dont remember) are good. they may not be cheap, but listen to to old addage: "YOU GET WHAT YOU PAY FOR" thats right, if you get a cheap PSU you will end up spending more money in the long run because it will most likely fail on you and possibly take out another component with it.
here is a better card that is made by ATI and is in stock. ( as of this post 3/15/04)
ATI RADEON 9600XT Video Card, 128MB DDR, 128-bit, DVI/TV-Out, 8X AGP -RETAIL