I found this in a few different places around the 'net - hopefully it's helpful:
Disable Error Reporting
You can get rid of the Windows XP error report messages if you don't want to send another one in.
- Click Start, and then click Run.
- Type msconfig to open the System Configuration Utility.
- Click the Services tab.
- Clear the Error Reporting Service check box, and then click OK.
- Hit Restart to reboot your system.
Your computer will now start without loading the error reporting service.