The reason it failed: you must
use the same version as your kernel -- if you do not have that version available you must
recompile the driver as descriibed in the readme.
It is easiest for you to simply update the kernel.
Updates are available from Red Hat until 31 April 2004. After that, you should have updates available from Fedora Legacy
when serious (security) updates are needed.
If you do not want to update, then you should use [urlhttp://download.nvidia.com/XFree86/nforce/1.0-0261/NVIDIA_nforce-1.0-0261.src.rpm]this rpm[/url] and rebuild it as described in the readme
Both are posted on the driver download page: http://www.nvidia.com/object/linux_nforce_1.0-0261