You guys have been a GREAT help so far!! Thanks.
New Nvidia drivers work fine now forr my FX5200, but ONLY if I am logged into X as root.
If I log in with my regular (non-root) user account I still get the permission error message.
EDITED: Nevermind... Ran through the 'cp -a /dev/nvidia /etc/udev/devices' and 'chown root.root /etc/udev/devices/nvidia*' again.. Don't know what I did different?? But it works as root or standard user now... Thanks