My comment/question is, why are you burdening everything with PowerPoint?
.jpg images simply burnt to a CD (using no underlying application) should display as a slide show in most DVD stand-alone players.
The "next" remote button should display the next image. A manual slideshow.
You need to be aware that some stand-alone DVD players do not like CD-R (in any form), some do not like CD-RW. Its a bit of a lottery, I find the cheaper players tend to be the most compatable ones, and the ones that also recognise .jpg files with no need for the added software.
I can just drag and drop the images from my camera to a CD-R, send it to the relatives and they view it on their DVD players. All I need to remember is to make sure all images are in the right orientation (or they are sideways on the TV)