aactually, the sony/blu-ray software will not play hd-dvds either. its a specific blu-ray one.
Theres a rumor that the FULL paid, non-trial windvd8 platinum may work but nobody confirmed yes or no. I asked cyberlink when a purchasable hd-dvd playback option was available and let them know a lot of hd-dvd 360 drive owners want it.
I think the best hope will actually be if the HP HD100 drive comes out soon. Its suppose to be out for this holiday, it should be a liteon model since liteon makes all their drives, and it shouldn't be to costly and will come with cyberlink software packaged with it.
I've also been daily combing all laptop makers with hd-dvd models to see if any accidently put it for download on their support site :)