"If it matters I have a NVIDIA GeForce 2 mx. Thank you in advance for your assistance."
It matters. Install the kernel src for your kernel
ftp.redhat.com/pub/redhat/linux/updates/9/en/os/SRPMS/kernel-2.4.20-19.9.src.rpm
Make sure you installed the associated updated kernel for 9.0. It's in the i586 directory.
rpm -Uvh kernel*
Then do this:
At the command prompt. Type
init 3
wget
http://download.nvidia.com/XFree86/L...-4496-pkg2.run
chmod +x NV*
./NV*
Go through and install the driver. Reboot.
Try to change resolution again. You'll notice quite a bit of difference.