As of this very day, December 20, 2008 the top two searches on http://www.Google.com for creating DVDs from a PowerPoint presentation involve the following two products:

E.M. PowerPoint Video Converter – The completely free way to make a DVD, but it has one serious flaw in most of my conversions.  Hold onto your hats for this one!  It overrides all of transitions and only has the capacity to set them to a single value.  If all your transitions are consistent then no worries.  But if you’ve spent a lot of time on customizing slide to slide transitions then look to the solution below…

Acoolsoft’s PPT2DVD -  This software package effectively handles custom animations and slide to slide transitions preserving them nicely in DVD format.  After designing the DVD layout it’s quite literally one step to put your existing PowerPoint Presentation into the PPT2DVD interface and another click to directly burn a DVD that’s playable in most of today’s DVD players.  The downside is that this solution is not free… I paid $79 for my copy via the vendors' web site, though I’ve seen it listed for as much as $129.

In summary when it comes to ease of use, a nice feature set and pure speed of solution, there’s only one way to go…spend the money on PPT2DVD and your project is well on it’s way to completion.

UPDATE:  I was asked why I needed this software... well, my Grandfather died and on short notice I created a nice memorial PowerPoint presentation, all the while thinking I'd be able to burn to a CD and disperse to fellow family members.  Oh, what a surprise, I worked about 7 hours and realized this option didn't exist and many of the family members most interested in viewing my creation do not have computers!  Frantic, I searched for a solution that could get what I needed done in less than 3 hours.  I tried the video converter listed first, but was disappointed that it blew away all my transition settings.  Next, was a free trial of the PPT2DVD software, which ultimately led to it's purchase.