Im currently using a Core Duo 3800+, with a NV 7600gt, very happy but now have a problem, it not a CPU issue, its a openGL one, I had the problem before with XP,  I downloaded the v1.1 patch and that fixed it, but now with
Vista and the open gl patch installed, I still got this.

openGL ICD GDI Generic is being use.
Please install the proper drivers for your 3D accellarator
if this is not the intent.
Press OK to proceed.

after pressing OK I still get this.

This application requires graphics driver support for openGL 1.3 OR Higher

eefbb\system\win32_x86_sse2\sbzEngine.exe

I installed these as well,..The Chronicles of Riddick NVIDIA OPENGL FIX

You have got the Nvidia drivers installed then? Also, from the path you give it looks like your running vista 64bit? Might that be the issue?

its a known fault with nVid cards.  Cant remember the fix.