Try to repair your systemfiles the easy way: Start/Run & 
type "sfc /scannow" (no ,quotes) & click OK.
This should fix your systemfiles back in shape again.
Otherwise you may repair XP:
Put in your XP-install-CD & reboot. Make sure in BIOS that 
it's booting from CD. When install-pgm starts select 
Install XP (or something like that) & at next screen 
select Repair.
This "repair should fix it, without destry 
anything "privat". EXCEPT My documents! Make a backup of 
that folder for every user of the PC first!
These advices is just some of the solutions I know.
Have you recently changed any driver installed any new pgm?
If so, try Start/Program/Help & support/(I don't remeber 
exactly the name here but maybe it's: Create Restorepoint
& when that starts: Go back to previous restorepoint.
You get a "kalendar" that helps you to remember what you 
installed with the name of the installed pgm (sometimes 
with good pgm:s). After select a restorepoint to go back 
to just click OK & wait 3-10 min.
Hope you fix it some way...
>-----Original Message-----
>ok, when my computer starts up it is fine but when I 
right 
>click on the desktop, I get an error message that says 
>explorer desktop has encountered a problem and has to 
>close. Has anyone else had this problem before and was 
>able to fix it? I have Windows XP Professional 
edition.any 
>help would be greatly appreciated. Thanks.
>.
>
.