vegas video question...
 

How can I cut a 20 minute clip into 1 minute clips without manually making each of those minute clips.

I wouldn't use Vegas for something like that. There's a bunch of other programs (depending on what format the movie is) that will do it much faster and easier.

Easy Video Splitter comes to mind.

http://www.doeasier.org/splitter/

Or maybe try this...it's free!
http://www.divx-digest.com/software/asftools.html