A balloon reminder will annoyingly keep popping up asking you to enter your MSN Messenger username and password. Once you enter it, it will be stored—forever! If you don’t want to be nagged by the balloon, use this hack to disable the reminder forever.
Navigate to:
HCU\ Software\ Microsoft\ MessengerService
Change the Binary Value PassportBalloon to “0a 00 00 00” to permanently disable the reminder.
