Moze i tako, a moze i jednostavnije:
1. Ako hoces potpuno uklanjanje messengera onda:
Kucaj u startnoj liniji (win key + R, naravno copy/paste sledece)
RunDll32 advpack.dll,LaunchINFSection %windir%\inf\msmsgs.inf,BLC.Remove
2. Ako hoces da uklonis samo messenger pop-up onda:
Click Start->Control Panel
Click Performance and Maintenance
Click Administrative Tools
Double click 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
Sava