Once the narration recording is saved, the narration clip is added to the Collections window at the top of the screen. Notice that the icon is an audio type.
Test your narration in the movie, by clicking on the Play button. If you do not like the results, simply delete the narration in the Timeline and record again.
Move on to Part 4 - Video Transitions and Video Effects in Windows Movie Maker
Complete Business Lesson Plan - The Ergonomic Computer Workstation Setup