Mac mini - has Firewire port on the back to import digital video, and includes relevant software listed below -
iMovie - to import and edit video and digital stills
iDVD - can create a slideshow with good effects like crossfades
iPhoto - can import digital photos to iMovie and iDVD
iTunes - can import music to your presentation
Good luck on your project. If you do borrow a Mac and need some info on how to do something, ping me on this thread and I'll try to help find a quick solution.
Excellent - thanks for the linking and your time to do so, on my behalf. I will take you up on your offer if I get stuck along the way :-).