Disk image question..

Hi all-
I just bought TI yesterday and hope I haven't made a mistake. I'm a teacher and have 32 new Dells coming into our lab shortly. Every computer is going to have to have the same software installed, 32 times. My idea was to make a copy of one drive and then just load the rest from that disc. Then I got to thinkin'. The operating system is fresh and fine so there's no real reason to copy that over. Then I thought it would be a good idea to just install the software from a drive image. I'm not sure how to do this and when you install software, it writes to the registry, right? When you copy software, as from a disc image, you not really installing, your're copying, right? Which I think might be different.

As you can see, I'm pretty new at this. Any help/comments would be greatly appreciated!

Mark