Dell Inspiron 8500 and XF86Config

[DCS]

Greetings;

Wondering if anyone's resolved the Dell Inspiron 8500 X Window
configuration.  This is one with the NVIDIA®  GeForce4 4200 GoTM 
Graphics adapter and wondering about the correct HorizSync, VertRefresh,
ChipSet, Card, Depth and Modes specifications especially given the wide
aspect ratio.

Tried to first install FreeBSD 5.1 Release where it went crazy right
after booting from the second floppy disk, so managed to then install
FreeBSD 4.8 Release, but still getting a less than optimal resolution
upon running xinit and also a blurred shell display upon subsequently
exiting the X Window session...

Thank you for your consideration,