Convert Your HD DVDs to Blu-Ray  If you're an early adopter who
got burned by Blu-Ray's victory over HD DVD, Wired's How-To Wiki
details how to convert your old-and-busted HD DVDs to the
victorious Blu-Ray format. The catch is that the process, from
start to finish, is a major pain, and you'll need both an HD DVD
drive and a Blu-Ray burner on your PC. In all the conversion is
probably more of a hassle and just as expensive as re-purchasing
your HD DVDs in Blu-Ray or buying a dual-format player, so if
you're really considering going through this process, you may
want to take that into account that before diving in. If you
were stung by the demise of the HD DVD, let's hear how you plan
to cope in the comments.  Convert Your HD DVDs to Blu-Ray [Wired
How-To Wiki]