Microsoft’s Error Reporting in windows sometimes is disturbing, most of us don’t want to send that error report because it’s of no use.
There’s an easy way to disable Microsoft error report in windows.

*Disable Microsoft Error report in Windows XP :
1) Open Control Panel (Start > Control Panel)
2) Open the Problem Reports & Solutions applet Under advanced options and disable error reporting.

*Disable Microsoft Error report in Windows Vista :
1) Right click on my computer (Desktop) and click properties
2) Click the Advanced Tab
3) You’ll see a “Error reporting” button at the bottom, click it
4) Select Disable Error Reporting.
And you’re done….!