How do I disable Windows Messenger Service?

Disabling the Messenger Service
To disable the sometimes annoying WMS popups follow these instructions:

Windows XP Professional
Click Start | Settings | Control Panel
Click Administrative Tools
Click Services
Double click Services
Scrolldown and highlight "Messenger"
Right click the highlighted line and choose Properties
Click the STOP button
Select Disable or Manual in the Startup Type scroll bar
Click OK

Windows 2000
Click Start | Settings | Control Panel | Administrative Tools | Services
Scroll down and highlight "Messenger"
Right click the highlighted line and choose Properties
Click the STOP button
Select Disable or Manual in the Startup Type scroll bar
Click OK

Windows NT
Click Start | Control Panel
Double Click Administrative Tools
In the Messenger Properties window, select Stop
Then choose Disable as the Startup Type
Click OK

Windows 98 & ME
Windows Messenger Service cannot be disabled unfortunately