It sounds like they're WMV-HD files? If so a few sites sell them, I've got a couple. They are high-def resolution but the bit rate isn't what you'd get from true HD-DVD when it's released as far as I can work out.
I wonder if that is the Chinese answer to HD-DVD and Blu-ray which was born out of a desire to say "screw you western based greedy global corporations" by the Chinese manufacturers. The catalogue for that sort of machine would be huge for the far east market but very limited for a western audience since no US studio will support it with only the Chinese backed or co-produced movies such as "Flying Daggers" making an appearence.
A link to the site may have been useful unless it's full of pirated US movies for the format
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"The Nac Mac Feegle are, well, they’re like tiny little Scottish Smurfs who have seen Braveheart altogether too many times."
I've not seen output myself but someone who has informs me that these players do an amazing job of upscaling SD DVD to 1080i or p. Would be interested in seeing it myself.
The chances of these HDV dics playing on an HTPC are slim I'd imagine.
Peter
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Sony VPH-1271QM CRT, Pioneer VSX-D2011, Pioneer Dv-565A, B&W CDM 1NTs, CDM CNT, DS6s , 601S3s, Velodyne CHT-15, HTPC Scaler. see it all here