I found the following here:
http://datamining.csiro.au/linux/dlcpid300xt.html
For the Latitude CPi-D Series of Dell laptops this will work for your XF86config file.
Here is the code if you are lazy:
Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
FontPath "/usr/X11R6/lib/X11/fonts/misc/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/Type1/"
FontPath "/usr/X11R6/lib/X11/fonts/Speedo/"
FontPath "/usr/X11R6/lib/X11/fonts/misc/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/freefont/"
FontPath "/usr/X11R6/lib/X11/fonts/sharefont/"
EndSection
Section "ServerFlags"
EndSection
Section "Keyboard"
Protocol "Standard"
AutoRepeat 500 5
LeftAlt Meta
RightAlt ModeShift
RightCtl Compose
ScrollLock ModeLock
XkbKeymap "xfree86(us)"
EndSection
Section "Pointer"
Protocol "PS/2"
Device "/dev/psaux"
Emulate3Buttons
Emulate3Timeout 50
EndSection
Section "Monitor"
Identifier "Dell SyncMaster 17GLi"
VendorName "Dell"
ModelName "SyncMaster 17GLi"
HorizSync 31.5 - 48.5
VertRefresh 55-65
Modeline "1024x768" 65 1024 1032 1176 1344 768 771 777 806 -hsync -vsync
EndSection
Section "Device"
Identifier "NeoMagic"
# Option "intern_disp"
Option "extern_disp"
EndSection
Section "Screen"
Driver "svga"
Device "NeoMagic"
Monitor "Dell SyncMaster 17GLi"
DefaultColorDepth 16
Subsection "Display"
Depth 16
Modes "1024x768" "800x600" "640x480"
ViewPort 0 0
EndSubsection
EndSection
Later,
Phekno