I've just installed the latest kernel 2.4.20-20.9smp for redhat and now X doesnt work with the nvidia driver NVIDIA-Linux-x86-1.0-4496-pkg2.run which was working fine before the kernal installation. Any idea's how to fix this?
Thanks.

after booting your linux you'll find out that your scren flickers right?
the driver only work when you inculde the modules into your new kernel and when you recompiled to a new kernel it dosent include the nvidia modules. so you have to reinstall the driver.

so, you dont get into your desktop manager right?
when you boot into linux it will flicker for few times then it will ask you questions that gives you options of "yes" and "no" and you have to select no for every questions it ask. then login into your root account and reinstall the driver using this command

# sh /myDriverLocation/NVIDIA-Linux-x86-1.0-4496-pkg2.run

reinstall the driver. to do this you have to have the original kernel source code in /usr/src/ folder.
thats all
if cant work please ask here what informations of what is wrong.

I tried re-installing the driver before and you were correct in that the screen flickers then error msg etc. Unfortunately this has not fixed the problem but I haven't tried putting the old kernal source in /usr/src yet. Where is the source located?

run as root:

# sh /NVIDIA-Linux-x86-1.0-4496-pkg2.run --add-this-kernel

This will add your present kernel to the driver list. Make sure you have the source for your presently running kernel.. If you get an error about not being able to compile the NVIDIA driver try doing

export IGNORE_CC_MISMATCH=yes

before above command