Netflix just added a "Formats" preference setting in Account Preferences on the Your Account page. It allows you to set up your acct. for HD-DVD rentals, and says:
"HD DVD movies will be available to you at no additional cost!
There is another type of high definition format called Blu-ray, which is not yet available. We will carry movies in this format as well, so check back later this year!"
"I am determined to be cheerful & happy in whatever situation I may be; for I have also learned from experience that the greater part of happiness or misery depends upon our dispositions & not upon our circumstances."