I need HELP!  I have published the movie I made on Movie Maker to a DVD-R but it will not play in my DVD player.  Does the disc have to be a DVD-RW?  Does anyone know what I might be doing wrong? I am definitely not a genius when it comes to computers.  It took me 3 hours to get it "Published" on to the disc and now it won't play :(  Please be specific and easy to understand if you have a possible answer.    It will play on my computer but I need it to play in a DVD player for viewing on a TV screen.