You can save a Lightroom slideshow as a .pdf and then burn it on to whatever disk you want. You can also choose the resolution you want - 800x600, 1024x768, 1280x1024 or whatever size you want. Clicking on the .pdf, Acrobat Reader will ask if you want to load the show full screen. Say yes and enjoy the show. NB: .pdf slideshows change at a fixed rate only, no matter what you've set it to.
Mike.