Serious Sam's Serious Problems

SS won’t work for me. SS tech support says its my drivers, but I installed the latest Nvidia detonator 3 drivers for my MSI 8815 GeForce2 GTS per SS tech support, and I still can’t get it to fire up. Have a question itno MSI re any OpenGL issues with their card - in the interim, can anyone recommend a good OpenGL testing progam to see if its my card, the drivers, or Serious Sam (which I suspect strongly is the case)

System is P3 500
Intel SE440bx-2 m/b
512 MB ram
Geforce 2 GTS 32 mb video

All help appreciated.