What kind of DVD player will play HD DVDs?
To play a high definition DVD, you need a high definition DVD
player. There are two types available currently. HD DVD, developed
by Toshiba is one and BluRay, developed by Sony is the other. They
are not compatible, so an HD DVD will not play on a BluRay player
and a BluRay disc will not play on an HD DVD player. BluRay looks
like it is the winner in the format war between the two companies
over the last years so it is likely that Toshiba's format will
disappear in the coming months. Note that HD DVD can refer to the
Toshiba format but it can also refer to high definition DVDs in
general.