To uninstall Windows Messenger, Version 4.7, from Windows XP:
1. Close all application that link to Windows Messenger.
2. Open a CMD.EXE prompt.
3. Type the following command and press Enter:
RunDll32 advpack.dll,LaunchINFSection %SystemRoot%\INF\msmsgs.inf,BLC.Remove4. If all applications that link to Windows Messenger were closed, a restart is NOT required, but I would restart anyway.