Verizon Droid X - phone won't vibrate
On my Galaxy S, the vibration settings are under Settings -&gt; Sound.  The Vibrate option has 4 choices (Always, Never, Only in silent mode, and Only when not in silent mode) and when the Haptic feedback option is checked, Vibration intensity can be set to 0, 1, 2, 3, 4, or 5 but I don't think that affects regular vibrations.