I have had good luck with 280Slides: http://www.280slides.com/ http://www.280slides.com/ But, don't expect the site to be completely without quirks. Leave your

I have had good luck with 280Slides: http://www.280slides.com/ http://www.280slides.com/ But, don't expect the site to be completely without quirks. Leave yourself plenty of time to put the slides together, and export a file before your presentation just in case. I did have a little trouble getting their software to work occasionally.