[ltp] Dual monitor setup: T40p+XFree-4.3.0

[Yury Prilutsky]

Hi,
I am currently running Slackware-current on a T40p and would like to add an 
external LCD screen as a second view (not a duplicate of the laptop screen). 
Ideally it would autodetect when the laptop is plugged into a mini-dock and 
use the DVI on the dock for the external screen (but I would be very happy 
just to have it working without the auto-detection part or using the 15-pin 
VGA port instead of DVI). 

The recommendations I have found so far refer to setups with two video card, 
which is not the case here AFAIK (the graphics adapter is ATI FireGL 
Mobility). Does anybody have such a setup? Any pointers are appreciated.

Another question is the difference in the screen resolutions: the laptop LCD 
is 1440x1050 and the external one is 1280x1024. Is it possible to have 
desktops (under KDE 3.1) of different sizes?

Thank you,
Yury