Sorry to hear that, Hill! My webmaster says the problem isn't that you are using Windows Vista. To be able to view the audio-visual show, he says, all you need is to have Microsoft Office and the PowerPoint program (at least the viewer) installed in your computer. I understand these are usually standard features that come with Windows Vista, so I suggest you get a technician to activate them if they haven't been activated yet. The audio-visual is simply too good to miss!
(Before you call the technician, though, try to do the download again. You may have done your downloading while my technician was still fine-tuning the upload of the show.)