Hey guys.. So, I had started to fuss around with the alarm on my iPhone 3g hoping I could get it to go off for a silent alarm. Like a "To Do" and just vibrate with no sound. I am not sure if this has been discussed before, but this is a short "how to." I love the feature, that even if you leave for phone on vibrate, the alarm will still go off in the morning. However, while Im at school or work, sometimes I want a silent (vibrate alarm) to go off. I did this by creating a "mute" ringtone. Go into Garageband and take one of the ringtones you made before and lower the master volume to "0." This will in essence create a silent or muted ringtone. Now whenever you need an alarm to vibrate ONLY, just set that particular alarm to the silent ringtone you just created! Hope this helps.