Dual-head, dual-user question

["Mark Knecht" <mknecht controlnet com>]

Hi,
   I think this should be quite possible with a tricky bit of configuration.

   If I had a single PC with a dual head graphics adapter, and then two
keyboards and two mice (possibly one mouse and keyboard are USB, or possibly
both) should it be possible to take a single fast machine and let two
non-performance oriented users 'share' the machine?

   If this was to work I'd need the linking of monitor, mouse and keyboard
to be bullet proof, such that logging on at Keyboard A, independent of what
the user ID was, would always correctly show up on the monitor in front of
keyboard A and would always use mouse A. Both heads must be able to run X,
and if possible I want both to run different Window environments if
possible. (Say KDE and fluxbox at the same time on different monitors, but
this is not an absolute requirement.)

   My 70+ year old parents with absolutely zero Linux experience are the
target audience for this idea. I would manage the machine remotely, which I
already do with their Windows boxes and PC Anywhere.

   Any and all ideas much appreciated. Pointers to working examples are
certainly best. Any problems you know abut this sort of system would be
interesting.

thanks,
Mark