CentOS 5 Hardware :: Cannot Change The Video Resolution

I have Centos 5.5 64 bit (with all updates) installed on a new computer that I built, and everything works perfectly out of the box except for the fact that if I try and change the resolution of the display to the max resolution that I can use (aka native resolution of the monitor at 1920 X 1080) using system-config-display, as soon as I log out and log back it in, it reverts to 1280 X 1024. I am very leery of changing the xorg file because this is an expensive monitor and I do not want to trash it, and I have absolutely no experience setting up these video parameters in linux. I did try switching from the vesa driver to the radeon driver using system-config-display, but Centos forced a reconfigure of everything, bringing it back once again to vesa at 1280 X 1024.

I have no desire to to any gaming in Linux, so 2D resolution at 1920 X 1080 using open source drivers would be fine (Whatever the easiest solution would be). I would consider updating drivers, but I my number one concern in doing so would to keep Centos stable. All I ask for is text that is easier to read when I open a terminal, because I work almost exclusively from the command line. My very old computer which is running Fedora 13 and much older hardware has absolutely brilliant graphics in comparison (Obviously newer drivers, kernel, looks like it does not use an xorg file, etc).

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