VibeProfiles is a small application which allows you to specify which events (call, sms, calendar reminder, mms, email) will make the treo 600 vibrate when the hardware Ringer Switch is set to the Sound Off Position. you can define profiles for quick one finger configuration. by setting this application as one of your favorites, in the blink of an eye, you will be able for example to totally silence your phone before a meeting, and reactivate it just as fast when you are through.