nvidia makes their own Linux drivers- yeah! they can be found here.

http://www.nvidia.com/content/drivers/drivers.asp

I couldn't tell you how to use them if you want to boot the Knoppix disk though - but it's easy enough to use them if you install to a hard drive. Do a search on
www.google.com/linux for 'nvidia' and you ought to get quite a bit of info. As I understand it the drivers won't compile on the new 2.5 kernel but that's just an F.Y.I. in case you upgrade kernels at some point in the future. gluck