A quick glance through the Frequently Asked Questions would have answer this one for you.
http://forum.slysoft.com/showthread.php?t=13783
If you burn an HD DVD to Blu-ray, it will play back on a PC, but not on a stand alone as they don't recognise the file structure
would it play on a hd dvd stand alone player?
would it play on a hd dvd stand alone player?