Return to Castle Wolfenstein

I have installed this game before and it worked, but I just recently formatted and reinstalled OS and now when I try to run it the screen flickers a few times then it says it couldn't load OpenGL subsystem. I imagine this is an easy question, but I forget how to fix it. I remember seeing this before some other time in the past. I tried running the single player safe mode executable but still comes up with the same thing. Someone help please.

 

Just a wild guess but you may need to reinstall your video drivers and direct x 8.0a minimum.

check here Wolfenstein opengl help

 

go here for the drivers you need good luck:

http://www.nvidia.com/view.asp?PAGE=windows2000