LinuxQuestions.org - ATI drivers messing up my display ? (CentOS)

I wanted to setup a game (Cube) on my CentOS box. I noticed the game runs very low on fps and I assumed that was because there was no video acceleration. So I downloaded the ATI driver package: ati-driver-installer-8.23.7-i386.run (31Mb). Everything went fine with the setup, and now the game works well on fps however X seems to be running on a huge resolution (I believe its 1600x1200, which is much bigger than my usual 1024x768 - also the screen refresh rate is so low that it hurts my eyes). I am however unable to revert back to my original resolution because:
- Applications -> System Settings -> Display no longer works (it just doesn't start).
- I've got an ATI Control utility but there is nothing about screen resolution there.
- the command aticonfig --resolution=1024x768 seems to be working (of course I ran that as root), but after I restart X (or reboot) the resolution stays the same (huge).
- tried editing xorg.conf, but still no luck. Below is a section which I consider relevant from xorg.conf:

Code:

Section "Monitor"

        Identifier  "Monitor0"

        VendorName  "Monitor Vendor"

        ModelName    "Philips 109B40"

        DisplaySize  1024        768

        HorizSync    30.0 - 97.0

        VertRefresh  50.0 - 160.0

        Option            "dpms"

EndSection



Section "Monitor"

        Identifier  "aticonfig Monitor 0"

EndSection



Section "Device"

        Identifier  "Videocard0"

        Driver      "radeon"

        VendorName  "Videocard vendor"

        BoardName  "ATI Radeon 9800"

EndSection



Section "Device"

        Identifier  "ATI Graphics Adapter 0"

        Driver      "fglrx"

        BusID      "PCI:1:0:0"

EndSection



Section "Screen"

        Identifier "Screen0"

        Device    "Videocard0"

        Monitor    "Monitor0"

        DefaultDepth    24

        SubSection "Display"

                Viewport  0 0

                Depth    24

                Modes    "1024x768"

        EndSubSection

        SubSection "Display"

                Viewport  0 0

                Depth    24

                Modes    "1024x768" "800x600" "640x480"

        EndSubSection

EndSection



Section "Screen"

        Identifier "aticonfig Screen 0"

        Device    "ATI Graphics Adapter 0"

        Monitor    "aticonfig Monitor 0"

        DefaultDepth    24

        SubSection "Display"

                Viewport  0 0

                Depth    24

        EndSubSection

EndSection



Section "DRI"

        Group        0

        Mode        0666

EndSection

What options do I have left ?

PS: My display adapter is an ATI Radeon 9800 SE
PPS: I edited the line

Code:

DisplaySize 1024 768

from the above xorg.conf. It was originally set up to:

Code:

DisplaySize 320 240