WinDVD and PowerDVD are not free. One of them usually comes with the DVD drive though. If you have either of them installed, WMP10 will be able to play DVD's too. None of the codecs for WMP10 are free, as far as I know.
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS