I have an easier way for a first time nvidia install on Red Hat 9. Break X:
1. login as root
2. edit XF86Config and change the line from "nv" to "nvidia" just like in the readme file. save and logout.
3. this should have broken X, just say no to debug and no to running the X config program.
4. login as root. and run the nvidia script.
5. reboot, all should be well.
definately not the proper way to do it. but it works for me.