Two Inexpensive Ways to Back Up Presentation Visuals
Before you grab your laptop and head for the airport, convert your PowerPoint presentation into an Adobe Acrobat PDF file. Save it with a short filename, and upload it to your web site. This ensures a back-up copy of your presentation will be available, in the unlikely event your laptop is stolen or crashes.
If something goes wrong with your laptop, simply use your host's web browser to download the PDF copy of your presentation from your web site. You can then run your presentation in Acrobat's Full Screen mode (which hides the menus).
Use the arrow keys to navigate from page to page.
If you don't want to go to the trouble of uploading your web site, make a CD copy of the Acrobat PDF version of your presentation. The advantage of a PDF version is that there is no chance that the fonts you created your presentation in won't be available on your computer.