This is not an XP issue. Some program you installed was created with this
compiler. The way to get rid of the error is to remove the program. We
can't tell you what that is but you might start as follows:
Make sure your antivirus software is up to date and run a virus scan on your
system.
If that comes up clean, try Ad Aware as you may have installed some
application that has attached itself something else on your system and Ad
Aware might find it:
www.lavasoftusa.com.
If the above doesn't find the problem application, you will need to remove
applications one by one, checking after each removal to see if the problem
goes away in order to determine which application is the culprit.