sean,
Internal optical drives have three options for their configuration...Master, Slave, and Cable Select. Apple wants Master, at least on the older powerbooks, and its setting is reported in the System Profiler as Unit Number = 0 (Master) and Unit Number = 1 (Slave or Cable Select...I'm not sure which).
Generally when a third-party drive is added to the Mac, it is set to Slave or Cable Select; PCs usually use Cable Select. These will still work on the Mac but the only way to boot a disk is via the Startup Manager.
Two points...
-Your drive is not set to Master nor is it reported as supporting burning. I would download PatchBurn for Tiger and see if it helps. I'm not sure if necessary but after the install, restart and check your System Profiler. You can read about it at their website. This will not help you in 9.x.
http://patchburn.de/download.html