You can do that type of Slide Show in PowerPoint if you wish, but Vista has lots of built-in themes for displaying your pix .
Click the pictures and videos you want to display in the slide show.
To select more than one picture or video, hold down the CTRL key while you click the ones you want. To include your entire Photo Gallery in the slide show, don't click any items at all.
Click the Slide Show button at the bottom of Photo Gallery to start the slide show.
After the slide show begins, click Themes, and then click a theme. Continuously click "Themes" to get a live preview of how that theme looks.
Experiment - you will probably find the one you want among the themes.
Hope this helps :-)