Go for it, you will change history. What is a DVD burner realy good for without a DVD back up program. The same is true for HD DVD burners. I have a Toshiba HD DVD player that up-converts DVD's and I have watched both up-converted regular DVD's and HD DVD's of the same title and HD DVD is way way better. You will end the HD DVD vs Blue Ray war if you make it a reality to back up HD DVD diks. DVD back up programs sold millions of DVD burners and if you make backing up HD DVD's you will be the reason people buy the HD DVD burners as soon as they are available. Capacity of the disks is mute as long as the movie fits. There are better ways then Blue Ray or HD DVD disks to back up computer files.