Did you get any error when you ran the recompile??
If you did, then you will also need to install the kernel Source for RH8.0 as it doesn't do that by default.
For RH8.0 I download the *.src.rpm files and compile them.
to do that:
rpmbuild --rebuild NVIDIA_kernel-version_number.src.rpm
rpmbuild --rebuild NVIDIA_GLX-version_number.src.rpm
The install them using RPM -Uvh NVIDIA_kernel-Version_number.i386.rpm
The compile will store the *.i386.rpm files in the usr/src/redhat/RPMS/i386 directory.
Then of course edit the XF86Config file in the etc/X11 directory as described in the readme file.
Hope this helps,