Download and install the CustomHTMLExport export plugin for iPhoto:
- Be sure that iPhoto is in Applications folder.
- Uncompress the Sample Templates folder that's included with the plug-in. Copy the template folders to your user's Library -> Application Support -> CustomHTMLExport folder (which you'll need to create).
[robg adds: The CustomHTMLExport plug-in seems to work fine with the latest iPhoto. I hadn't heard of either the plug-in or the Flash-based slideshows before. Since both are free, and the results quite nice (if you don't mind Flash), I felt it worth sharing.]

