XFree86 on a Dell Latitude CPx Hints

XFree86 on a Dell Latitude CPx Hints

XFree86 with RH 6.1
How do I get X working on this puppie?
A couple of items:
  1. XF86Config
    I use the one you can find here. The main differences you will find are it is very simple, it uses only one 'Monitor', and that is the LCD. Yes it works with the auxilary monitor port, but this is enough for me (1024x768).
  2. Horizontal sync is 31.5-48.5.
  3. "Screen" and "Device" sections
    Section specifies the "Mach64 GB" even though the screen chipset is an ATI Rage Mobility.

Dell web site and tech support was less than helpful.
The only response I got (but nicely stated) was that that even though Dell does support Linux (and Red Hat), it does not support it if the machine was not initially shipped with it pre-installed. Even getting the correct scan rates was considered 'support', so those details were not available to me.
Help?