Doesn't sound like a PowerPoint problem. Have you checked the Help File or
manual that came with the software? Maybe you need to write to the people who
sell the software.
Though this problem is not regarding powerpoint but I can help you to some
extent . If your problem persists , you can download Nero CD Burner from www.softpedia.com/public/cat/3/1/3-1-1.shtml .