OK. Got the Rosewill IDE to SATA Bridge and they don't play well with AHCI. So, I am dumping the entire idea and just bought a SATA combo drive for HD-DVD and Blu-ray. I tried both of the options (pci card and adapter) and the decision to replace my $600 burner did not come lightly.
I made the Xbox HD-DVD drive into an IDE with some grinding and soldering. Fun project. Fried a motherboard and a drive in the process. At one point, I was totally committed to making it work.. Buying the Blu-ray burner for about $600 made the budget tight so I got it done.