During my exploration into Web2.0 tools I had a play around with Photopeach which is an easy to use slideshow application. Here is the link to what I created. I could not download it because I was using the free version. The paid version is $3 per month. I found this application through the Go2Web20 site which is great resource of quick links to numerous web2.0 tools. It has been sorted into categories to help you find an application easily.