<< Suggestions? I am running a Geforce 2 GTS with 12.60 drivers. >>
Buy the full version. If you like FPS you will love this game. It is my favorite of its genre.
Actually, I have no suggestions other that d/l it again (overnight - I have 56K too) and reinstall.
If it is a problem with OpenGl you might check out the website that tests OpenGl and updates it (forgot the link).
If you think this response is no help, just considere it a "bump" for better technical support. 🙂
Also, post your thread in Software and Games. The responses there tend to be slower but more thorough.