To rearrange images and movies in a slideshow:
Double-click the button for the slideshow in your DVD menu to open the slideshow editor.
Drag an image or movie to change where it appears in the slideshow.
The other images and movies slide to make room.
To select multiple adjacent slides, press the Shift key as you click images. To select multiple slides that are not adjacent to each other, hold the Command key as you select. In either case, when you drag the images to a new location, it looks as if just one image is moving, but they all move.
Click the Return button to exit the slideshow editor.