If you look on the back of your computer your PSU ratings should be there, if not open up your box and look on the side. You will most likely need a new PSU for that badboy, atleast 350 watts, a good antec one can be found online for about 40 - 60 bucks.
I figured I'd need one. This one is only 300 watts and it only has one mini-molex connector free. I don't know what kind of power connector that card uses though. I don't know what kind of power supply with fit either. I don't know if I need an ATX or another kind of supply.
I think I'm going to wait a few weeks on the power supply. I can't afford all this at once. The only problem is my molex connector is about three inches short. Are there extensions for molex connectors?
I had that exact card before I decided to go with a Radeon X800 Plat. Anyways, it's definatly a great card at that price. Ran everything great on my 3ghz P4. Go for it.