Bug with the panel used to change the driver of the video card ?

I have found that the best driver for my video card should be the ATI Radeon 64 DDR (AGP) : indeed, my video card is an ATI Mobility Radeon graphics controller with user selectable 32-MB or 64-MB DDR SDRAM 4X AGP.

Since the FC2 DVD has previously installed the driver VESA driver (generic), I have tried to change the driver. Thus, I have selected the Radeon 64 DDR (AGP) driver. This has changed the file /etc/X11/xorg.conf. Indeed, it is written in xorg.conf :

Section "Device"
       Identifier  "Videocard0"
       Driver      "radeon"
       VendorName  "Videocard vendor"
       BoardName   "ATI Radeon 64 DDR (AGP)"
EndSection

Note that before, it was written :

Section "Device"
       Identifier  "Videocard0"
       Driver      "vesa"
       VendorName  "Videocard vendor"
       BoardName   "VESA driver (generic)"
EndSection

Thus, everything should be ok.

But, when I check the properties of the video, it is again written (see "Material") that I use the VESA driver (generic) !!!

And, indeed, I think that the video is not at all optimized !

Thus : where is the bug ? Do I have installed the ATI Radeon driver or not ???

Or, Is this driver well adapted to my video card ?

Moreover, I don't find the monitor driver (my monitor is a 12.1-inch TFT XGA display). Thus, I use :

Section "Monitor"
       Identifier   "Monitor0"
       VendorName   "Monitor Vendor"
       ModelName    "LCD Panel 1024x768"
       HorizSync    31.5 - 48.5
       VertRefresh  40.0 - 70.0
       Option      "dpms"
EndSection

(this is written in the file /etc/X11/xorg.conf). Perhaps the bad results of the video is also due to a bad driver for my monitor ???