I downloaded the latest driver(physics one) for the 9800 gtx+ and when I tried to play the unreal physics mod the frames went from 60 when I stated the game to about 5 after about 30 seconds. I don't know what is wrong with the game I also enabled hardware physics in ut3

what processor do you have?

it is a e6600 core2 duo. Also my main computer can play it well with the same drivers but instead I have a quad core and 3 9800gtx's .

Nvidia cheated with the software Physx, they unload some work to the processor. If you had a physical Physx card you wouldnt have a problem.

ok thanks for the help

I had nothing but problems with nvidia's new physx package. I've since rolled back to an older video driver that doesn't come with physx.