Any linux guys out there who might be able to answer this...?

I'm trying to get OpenGL to work on Mandrake 7.0 system (kernel 2.2.15). I've installed the latest XFree server (4.0.1) and got the latest Nvidia_kernel and Nvidia_glx files from Nvidia's drivers page. (I have changed the XF86Config file to load both nvidia and glx.) The XFree86.0.log states that Xfree is loading both the nvidia, glx, and libglx modules. Whenever I try to run an OpenGL program I get this error:

Xlib: extension "NV-GLX" missing on display ":0.0".

Any ideas?

Thanks,
Bash