I think it would be really cool if Mac OS could automatically treat a CD-RW as a big floppy, without any additional software, kind of like they apparently do with DVD-RAM.
Unfortunately, you do need the (IMHO overpriced) Adaptec software to do this; I've not been able to find any other way.
(I have a beef with Adaptec about this. They've released two updates of their DirectCD software for PCs, with no corresponding updates for the Mac. From the person I corresponded with in sales, they have no plans to update the Mac product, and to make matters worse, DirectCD for the Mac is $69, but DirectCD for the PC is bundled with CD Creator. Grr.)
-g