scott, there is third-party software help you convert ppt files to dvd and
play them on regular TV. You can check http://www.ppt-to-dvd.com for the
download section to have a free trial version.
Record your presentation as a movie. Try http://www.techsmith.com
Convert the movie to an MPEG2 file, which is what you need for a
video DVD.
Import the video into a DVD authoring program to actually create
the DVD menu and setup. Then burn the DVD.