Help Razr M vibrate length

[acmrmet]

The razr m default vibrates for less then a quarter second when receiving a text message and does not repeat. Is there any way to make it vibrate longer and/or repeat more than once?

 

[Longboardr]

I don't see an option to change vibration length in the settings of the stock text program.

I use the Handcent app for texting and you can control vibration length in it's settings.