Put me down as another person who is interested in learning exactly how this can be done; can anyone help us out with where to find these settings?

I've looked in Profiles (and everywhere else I can possibly think of), but so far - aside from the one for the display feedback vibration - I've only been able to find a vibration preference for "General" and "Silent", which seems to mean it's all-or-nothing.

I'd love to be able to able to specify discreet settings for IM, SMS, Email, etc..