I want to use a clip of footage of me in a play for a DVD-demo I'm sending as a supplement in my college admissions.

It is a roughly 3 minute clip from a 60 min. DVD.

I have iMovie HD. I can edit the clip myself (and would prefer to) as long as it's in a Quicktime file. But the clip is ON the DVD -- I have no access to this clip anywhere else, and don't know how to get it off the DVD into my computer.

Do I need to take this into Radio Shack or someplace and get them to help me, or is there a way to do this myself?

Thanks for your help in advance!