Alas, I should keep from getting my hopes up...it didn't work for me.
Well, I should qualify that. It works as long as I don't reboot the system. If I use the NVIDIA install script, afterwards I can log in to any user, the NVIDIA splash screen appears and then KDE starts. As soon as I reboot, I'm back to where I was before...the screen flashes a couple of times and the system locks.
System: Mandrake 9.1
Mobo: ABIT KD7 - VIA KT 400 chipset
Card: GF4 440 MX