I know this is going to be beyond what you asked for, but you may want to check out a Mac. They include a nice photo organizer called iPhoto with the machine. iPhoto does great slide shows, integrates with iTunes and exports directly to iDVD which actually sets up DVDs with your slideshow. The best part is that if you edit a photo in iPhoto (or in Aperture) the edits show up in the slide show.
On the Windows side, my camera club friends use Prophoto Gold on Windows platform. Good luck, and enjoy the show.