You can either do that or, more safely, give the new kernel image its own name and setup another lilo stanza specifically for it. That way, you have both images in case one isn't booting properly.1. When you compile a new kernel is it just a matter of taking the bzImage file (once complete) and copying it to/boot and renaming it vmlinuz-2.x.x-x (whatever version x is) Then running lilo -v on it? i have read the howto.
See above.2. If you then want to recompile the same kernel, do you have to remove the bzImage file or can you overwrite? The output from the recompilation processs doesn't tell you very much.
I do believe the nvidea drivers are kernel specific. I'm sure someone will jump in and say for sure, or you could always check their website.3. Are rpms kernel specific? If you install a kernel specific driver for a kernel version can you install a different driver on the same machine for a different kernel version? this is really a nvidia question.
/var/log/boot.log4. What is the best file to get detailed information on failures when a machine boots (RedHat). I comiled a kernel yesterday and i couldn't get the rerquired detail to attempt a fix (it wouldn't mount the filesystems).