Why you don't use VLC-media player..It's free and really good!
Download it here: http://www.videolan.org/vlc/download-windows.html
I used VLC as the ONLY program for over 10 years. Version 0.8.6.1 I believe? ;p Anyways, while it indeed plays EVERYTHING it does have problems with DVD playback. Yes it plays VOB's just fine, and yes you can just right-click a folder and play the contents. BUT for actually starting to play a real DVD with menu's and all, VLC just isn't up to the job.
Also I noticed, mainly by MANY complaints of my friends, that the colours aren't good with VLC. And even I could not ignore that anymore once Windows 7 came out. Movies suddenly had GREAT colours, while VLC's still were much less bright and vivid.
This led to a search for better for my non-Win-7-friends. And everybody agrees: Daum Pot Player is THE NEW KID ON THE BLOCK! No discussions whatsoever.
Don't download it from their site, you will end up all Chinese. Instead, google for "latest daum pot player english download" and work from one of the mirror sites found.
And for DVD playback, well... Pot needs a little extra attention - and being Dutch... I always give pot all the attention it needs ; ))
*kuch* peace! *uh kuch*
devnullius