Apple iMovie HD - Manual (Page 26)

26 Chapter 3 Creating Your First Movie
You add photos to your movie by clicking the Photos button. The Photos pane appears
showing images from your iPhoto library.
Just like video clips, you can drag photos from the Photos pane into your movie. You
simply drop them where they should appear in the clip viewer. There are also options
that determine how long the photo appears on screen, and whether the photo moves
or zooms in or out.
Drag photos into
your movie.