Very late... but this instruction fixed my problem:
after installing the nvidia driver NVIDIA-Linux-x86-1.0-4496-pkg2.run it did not make any atempts to work on startup alltough I changed nv to nvidia as the driver in XF86Config-4. The system started but X was not available.
"modprobe nvidia" showed that the driver could be loaded and after that I was able to run X with "startx".
with the instructions below I was able to activate X directly at the startup including the new driver.
I run Mandrake 9.1 and have a Gforce 200mx.
Last but not least: Thank you
, then, if no errors,
Start off as your normal user (not root).
If that works, then make sure alias /dev/nvidia* nvidia
is in /etc/modules.conf, and run /sbin/depmod -a