There is a control panel applet with the Physx system software download from Nvidia that allows you to choose either the GPU based accelerator or the actual standalone card. I downloaded the Physx system software from Nvidia earlier, but it doesn't recognize my 8800GTS as having an accelerator on board. I believe that is what the new drivers next week will do, hopefully.
Here is the direct link to the software at Nvidia's site. http://www.nvidia.com/object/physx_8.06.12_whql.htmlThis comment was edited on Aug 8, 01:42.