Mike said what I was going to: this can be executed all within PowerPoint.
Alternatively, if you have DVD authoring software, it could also be done using a menu system and automated go-to’s added to the end of particular files.
If you’re that scared of diving into learning Wings or Watchout, and you don;t have the budget, then doing it all in PPT is what’s going to work “best” for your usier case. And you will come out of it with much stronger skills in PowerPoint as well.