Hi MacLone --

I've installed X.org and it duplicates the output to my VGA output device. I haven't yet gotten it to be two individual desktops, though, primarily because I don't need it that much!

I think installing X.org would be a start, then utilities like XRandR could offer something.

HIH a bit.

I used this method on my Compaq N610c. It should work with any dual-head video card.

Run xrandr and look for the line showing 'maximum' as below.
Screen 0: minimum 320 x 200, current 1400 x 1050, maximum 3200 x 1150

If maximum is not large enough to contain both monitors then use the 'Virtual' option in xorg.conf, see this link for instructions;
http://en.opensuse.org/Multiple_Screens_Using_XRandR

Once the maximum screen size issue has been resolved, place and xrandr command line in your .bash_profile (or whatever shell script is run after login in SliTaz).

For some reason I must first turn off VGA-0, so I used two xrandr lines in .bash_profile, as below:

xrandr --output VGA-0 --off

xrandr --output LVDS --mode 1400x1050 --rotate normal --pos 1400x0 --output VGA-0 --mode 1400x1050 --rotate normal --left-of LVDS --pos 0x0