InstaDMG usage

Hello,

Sorry in advance for the total newb questions…

With the arrival of our school system first new MBP with SandyBridge, we’re finding that our good ol’ “universal” 10.6 base image isn’t so universal any more. In looking for a way to not have to create a new image from scratch for this new machine, I’ve run across InstaDMG and have hope…

I’m starting to go through the “how-to’s” and trying to get my head around how InstaDMG works, but could someone please give me a quick “yep, you’re going the right direction”– or otherwise? My -desire- is to take our existing “universal” base image (which we deploy using DeployStudio) and make an add-on-package that will put the right pieces in place so that this existing image will work on the new machine… Is it possible? What’s I’m stumbling over is, how do I take a picture of the existing image and build a “differences” package for the new hardware, if i can’t get the existing image working -on- the new hardware in the first place?

Thanks!
Mike Pullen
Computer Tech
School District of Baraboo, WI