If what you want to do is just a data back up, and you don't need to
play your PowerPoint with a DVD player, common burning software is
enough and No matter it is a CD or DVD. DVD disc have more space
compare to CD.
If you want to watch PowerPoint on TV with a DVD player,
Here some aspects you need to pay attention to:
PowerPoint does not have the built-in ability to save presentations as
video files or other video formats such as DVD-Video and, even if it
did,
there would be significant loss of interactivity (because DVD-Video
and
PowerPoint slide show have very different capabilities in this area)
and
loss of visual fidelity (DVD-Video resolution is less than typical
computer
display resolution and most television will not render colors the same
way
that a computer display will).
The only way to do this is to get specific PowerPoint to DVD
software.
http://www.ppt-to-video.com/powerpoint-to-dvd-overview.html
the other option is to use Windows Movie Maker but you would have to
start from scratch and insert all the pictures onto it. I believe
Windows XP and Windows Vista came with this free software so you
probably have it. You click on Import Media and select the pictures
you want (press Ctrl to select individual pictures). You can then use
the Auto Movie button to add credits, music and transitions to your
movie. Then burn it to DVD.
Also there are PowerPoint MVPs professional advices for this issue,
check it yourself:
http://pptfaq.com/FAQ00156.htm
Hope this is helpful.