How to get rid of those Windows NT/2000/XP Windows Messenger Service popups
1. Click on the Start button and open the control panel.
2. Open the Performance and Maintenance control panel and go to Administrative
Tools.
3. Now double-click on Services, then scroll to Messenger.
4. Double-click Messenger and click Stop to stop the service.
5. Change the startup type to Disable
Source From:
ozoneasylum.com