1. Right-click My Computer.2. Select Manage from the menu.
3. Expand Services and Applications by clicking on the + icon.
4. Click Services. An alphabetical list of services will now be
available on the right side of the window.
5. Scroll down to Messenger and double-click the icon. The
Messenger Properties window will open.
6. In the Startup Type dropdown box, change the type from automatic
to manual.
7. Under Service Status, click the Stop button. A
progress window will briefly appear, and then the service will be stopped.
8. Click OK to close the Messenger Properties window.
From now on, your computer will not be subjected to pop-up messages through
windows Messenger.