Thanks for the suggestions. It is interesting to note that I typed in a number of simple questions regarding how to upload a slide show (slideshow) in the Search Engine of WordPress help, and the page you suggested, timethief, never came up. You'd think it would!
I've tried twice now to follow their instructions and it does NOT insert the slide show. I saved it as a .ppt (PowerPoint) and uploaded. I clicked on Save all changes. Had to reopen it by clicking on Show and then clicked on Insert into Post. There is NO "Insert Slideshow" option as their instructions say.
All it does is insert the title of my slide show, highlights it and when you click on it, a window pops up asking how you'd like to save/open this file and then downloads it onto your computer! When I open it, I have full access to change anything in it. That's not what I wanted. I wanted the slide show to be seen as the instructions from WordPress (http://en.support.wordpress.com/slideshows/) illustrates. It does not do this.
Can someone tell them 1) there is no Insert Slideshow button as they state and 2) once uploaded, saved and inserted into an empty post, it does NOT show a slide show as they illustrate, just the title w/link to file name. Nothing else is in that space.
I'm getting very frustrated with this because I've also tried to find a way to do this through a few other avenues, all to no avail. Thanks for any further help with this!