Mark Goodacre has posted his now annual helpful advice on using technology for presentations. His main point is worth reiterating--be prepared. Outside presenters show up at our church for various events sometimes with fantastical expectations regarding media use. One thing is for sure, have a backup of your presentations/handouts and alternatives for "plugging in". I always email the text of current-project documents to myself when I leave town so I can access them anywhere, including my smart phone or any internet cafe. However, I would add alternative presentation method 4.5 to Mark's list... Put your presentation on your iPod and run the show from it. In fact, how superior is this to toting around a laptop if all you have it for is driving a slide show? While I've never owned an iPod myself, this looks like just the justification you may have been looking for for spending $$$ from your professional expense account on an iPod! You can learn more about the capabilities with this article at Presentation Zen. For what it's worth, I would commend the Presentation Zen Blog to anyone who ever prepares a project presentation for a group. It is superb.