In past we have covered ZapMessener utility to completely Uninstall & Remove Windows Live Messenger of any version. ZapMessenger found to be very useful utility for many users facing WLM Sing up issue, uninstallation or reinstallation of Windows Live Messenger.
Here is similar utility WLMUninstaller to uninstall and remove windows live messenger or MSN Messenger. WLMUninstaller is free utility and doesn’t require .Net framework like ZapMassenger.
WLWUninstaller – Uninstall Windows Live Messenger & MSM Messenger