I just got the 360 HD DVD player. This thing plays HD DVDs beautifully. But when I played a normal oringinal DVD it played it at 480i stretched. Does this player not upconvert to 1080i? I did some searching and the only thing I can come up with is that I currently have the xbox hooked up with component cables. Can this be the reason? My xbox is the newer one with a hdmi port. Do you think if I go out and buy a hdmi cable will the HD DVD player now have the ability to upconvert my original DVDS?