Every time I have a problem with this one program, a little window pops up and asks me to report the error to Microsoft. How do I stop this?

To get rid of that pesky request Windows XP likes to pop up, right-click the My Computer icon on your desktop and choose "Properties".

In the System Properties window that appears, go to the Advanced tab and click "Error Reporting".

You have a few options. You could Disable error reporting. This will make any crashing program's window simply close itself. Poof! No explanation of what happened.

You could also click But Notify Me When Critical Errors Occur, but it might be even safer (and less confusing down the road) if you select Enable Error Reporting and Choose Programs to exclude only your commonly crashing program.