I think that I read somewhere that the since the HD DVD file system and the old SD DVD file system were so similar that if you had a small enough HD movie that it would fit on a standard DVD an HD DVD player would play the movie even though it was on a standard DVD. Well I recorded a TV show in MPG2 HD on my computer then edited it with Ulead VideoStudio 10, and created a HD DVD file on my computer hard disk. It plays OK using PowerDVD 7.1 but when I burned it to a DVD+R DL using ImgBurn 220.127.116.11 and tried to play it in my Toshiba HD-A2 it gives me an error saying that it is not a DVD formatted disk and that it can't play it. I would like to know for sure if this can be done before I waste any more blanks. Does anyone know for sure if this can be done or not. And if it can what app. is there that can burn the disk so that my Toshiba will play it. Thanks in advance for any help or ideas.