Please use Windows Explorer or another file manager of your choice to locate and delete these files.    * The file at "<$PROGRAMFILES>\Windows Messenger\key".    * The file at "<$PROGRAMFILES>\Windows Messenger\zlib1.dll".You can use regedit.exe (included in Windows) to locate and delete these registry entries.    * Delete the registry value "<$PROGRAMFILES>\Windows Messenger\svchost.exe" at "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\".    * Delete the registry value "<$PROGRAMFILES>\Windows Messenger\svchost.exe" at "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\".    * Delete the registry value "<$PROGRAMFILES>\Windows Messenger\svchost.exe" at "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\".