Movie Maker lets you take “snapshots” directly from your movie! This means you can go to any point within a video clip, capture a freeze frame picture and save this image.
While viewing a video clip in the preview monitor, pause the clip at an appropriate spot, and click the “Take Picture” button under the preview monitor. Movie Maker will then ask you where you’d like to save the picture. By default, Movie Maker will try to save your picture in your “My Pictures” directory.