MovieMaker will not import files from all video cameras. You may have to use a file converter in order to edit a movie that you shoot. MovieMaker will import .asf files and .wmv files as well as .avi and .mpg (and afew others.
For a practice file, go to:
www.discoveryeducation.com/
Download several movie clips on a subject of your choice. Save them in My Documents / Videos
