fyi, check out demo.mojoportal.com the andreasvicklund-02-alt1 skin now has image rotation.
But even cooler than that is that I have enabled content slide shows right in the html content feature. Enter some paragraphs images etc and enable the slide show in feature instance settigns to see it in action. (Please don'y do it on the home pqage of the demo site) I've setup an exaple here but it may not last given its a public demo.
experiment with it read the help links and let me know what you think