Students can back up courseware on DVD and make DVD photo slideshow

I have stored a lot of PowerPoint courseware about many subjects.  They become more and more. I really don’t want them to take up my computer, but I also prefer them to be shown easily when I must use them.  I googled this problem and there is one solution to backup my courseware: burn PowerPoint slideshow to DVD  and play them on DVD players. It is said that I can also burn PowerPoint to DVD for a DVD photo slideshow. This is really a fresh thing for me. I want to share it with you all.