How do I deactivate the X11 video device auto-settings?

[pursley1@xxxxxxxxxxxx]

Okay, time to move on to the next annoying problem with my machine.

I need to know if someone can tell me that will force X11 to default to 
a specific display mode (24 bit color w/ 1024x768 resolution) when it 
starts up.  I am using an LCD display that is not very forgiving in 
other graphic video modes and for some reason, even though I have that 
listed as the only option in xorg.conf, it still switches to another 
video mode when it first starts up.  When I force a restart to the 
Xserver, then and only then does it use the video mode I specified.  
Some help here would be appreciated and here is the section of my config 
file that contains the setting:

Section "Screen"
   Identifier "Screen0"
   Device     "Videocard0"
   DefaultDepth     24
   SubSection "Display"
       Viewport   0 0
       Depth     24
       Modes "1024x768"
   EndSubSection
EndSection

Thanks in advance,
Bradley