How to Uninstall Windows Messenger from Windows XP
||Solve a Messenger problem
Solve ID: 7
Shut-down Messenger if it is running.
Click the Start button, then click Run.
Type: RunDll32 advpack.dll,LaunchINFSection %windir%\INF\msmsgs.inf,BLC.Remove and press OK.
This should solve your problem. Return to the list of problems.