Cannot watch ripped movies

I am wanting to save my movies to my harddrive and watch them from my hardrive. I have ripped a with anydvd, but now I am having problems watching my ripped movie. Windows media player says “Windows Media Player cannot play the DVD because a compatible DVD decoder is not installed on your computer”.

I dont even want to use Windows media player but I dont Know of a better video media player.

I would like to have a video library of all my movies in my harddrive then watch them on my plasma tv (via video card, dvi to hdmi) is this possible can any one help me please?