When building a slide deck for a presentation, test to make sure it works at 1024x768, as thats all you can really rely on from a projector at a random venue. They will definitely not be 16:9 !
Actually maybe even 800x600 is an even safer resolution to test with.
Having a clicker would make it easier so that you don't have to stand next to the laptop hitting hte space bar to advance the slides.
