Windows Live Movie Maker is a free offering from Microsoft that offers novice and average users the ability to edit video and from there, be able to share/publish it to Facebook, YouTube, eMail, DVD and even custom resolutions. It's a basic editor with very simplified interface, and it's part of the Windows Live Essentials Suite of applications.
The program itself isn't bad; it's very basic- after a few months of using it, I found some problems with it and had to move on to something more capable. But for the basic quick stuff it's okay…
As I visit the forums from time to time, it seem to be a reoccuring issue where people/users can't create a DVD with Windows Live Movie Maker. Well, to be honest, Windows Live Movie Maker doesn't make the DVD's… the only thing Windows Live Movie Maker can do [technically] is export a WMV.