In reply to David Passell's earlier request asking about iMovieHD 6, Art Gorski sends an answer. "This article indicates that Apple removed the free download when iLife '09 came out.
"Bummer. All you can do at this point is buy an old DVD of iLife '06 and do the free Apple updates. Amazon has it for $50 and other places on-line may have it cheaper."
And my search has turned up http://discussions.apple.com/search.jspa?search=Go&q=iPhoto+09+slideshow which is the Apple forum for questions and answers. See if your circumstances fit in to any of these replies from Mac users. Let us know how it turns out.