@nicholas
From what I've read I haven't seen anyone use an ATI Radeon 9600. I have read of people using a 9800 though. First of all the card must support AGP 2x speed to work and many cards doesn't. If it does you might get working 2D but 3D is not supported AFAIK. It isn't for the 9800.
If you check wikipedia it lists supported cards for 3D and it goes up to the 9250.
