Vista DVD Player

I popped a DVD into my notebook but Windows Media player would not play the movie. If you are using Windows Vista for an OS and find Bill Gates has shafted you again, try using this free DVD player.

AVS DVD Player is a compact and easy-to-use program that has a simple user-friendly interface allowing you to start watching DVD movies with no additional software. There is no spyware included with the program, there is no catch, just a nice free program.
It does put two icons for shareware on your desktop, just drag them to the recycle bin if you don't want them, that's what I did with them.
Read more and download it here.
http://www.avs4you.com/AVS-DVD-Player.aspx