First I would go into the XF86Config-4 and change "NVIDIA" to "nvidia"
because I believe the NVIDIA module is in lower case letters. Also while going thruough your XF86Config-4 make sure you have a line load glx
and if you have "load GLCore" put a "#" in front of that line and also "load dri". This should get you going. Plus I would go into my bios and change the monitor to use only LCD or you will get a lot of flickering when you drop out of X. If this still doesn't work I would go to the NVIDIA site and download the latest driver, it is a shell script so once you have it downloaded cd
to the directory you downloaded it to and at the console type sh NVIDIAXXXX
where the X is just the rest of the file name of what you downloaded.
If this still doesn't work, download RH 9 and it will support the GeForce 2 Go right out of the box but with out GL support.
If this doesn't work you can always checkout my website where I posted how I went about getting RH 9 to work on my Dell Inspiron 2650.
My RH 9 Setup on a Dell Inspiron 2650