Windows media player, start it up, go to view, enhancements, click on show enhancements. You'll have a new set of options at the bottom of the screen, to the top left of this set of options are two blue arrows. Click on one of them until you get to the play speed options page. Pop your dvd in and start watching and then pause it. In the play speed area there are two arrows in round circles which should allow you to advance frame by frame.