Hello all.  First I would like to thank everyone who commented on my last questions, you all vere very helpful.

I have a Nvida GTX 460 SE that came with the system I piurchased.  At this time SW works but once my assembly have 50 or so parts, it freezes.  I understand that my card does not support OpenGL so SW is relying on the CPU.  I can't afford to upgrade the card right now so I am looking for the best driver.

i7 2.93GHz

Win 7

12g ram

SW 2011