Stealing a bit from Daring Fireball here, I’m afraid.
Take a look at this:
This is how you create a slideshow in IrfanView, a wonderful and relatively simple Windows piece of freeware that I use for very basic image manipulation (cropping, scaling, brightness/contrast) when I’m at work and stuck on Windows.
It’s a mind-numbing number of options, presented in almost random fashion in rectangles spewed across a window. I think my favorite part is the bottom right corner, where you can add text to your slideshow with “simple” variable expressions. This is NOT a program for non-programmers.