FYI,
I got the TRIUMPH DIAMOND 3.5" & 5.25" IDE TO USB 2.0 & FIREWIRE EXTERNAL HARD DRIVE ENCLOSURE (TT-346U2F) - (Thanks Santa!)
That Kelly had the DealMac link to.
Here's the specs:
The TT-346 Series enclosure is designed for any 3.5" & 5.25" IDE storage drives, such as 3.5" HD, Tape Back-Up, Zip Drives, and 5.25" CD, CD-RW, DVD, DVD+RW drives. This series provide unlimited storage expansio with the most flexibility. ATA-6/48-bit LBA Compliant for Large Drive (137GB or bigger) support. Built in High Quality Fan, Status LED. ($40.00)
I can assure you it will work with a CD drive. It has a plate in the front that when removed allows the full "face" of the drive to show.
However I used mine to house a new Western Digital 120GB drive. (thanks again Santa!)
It's a nice unit. It's mostly a silver gray plastic case with darker edge strips. The inside has a full sheetmetal bottom, metal backpannel and internal power and fan. The fan is pretty quiet too!
Here is an interface transfer rate comparison:
USB 1.1 ......................................... 12MB per second
Firewire 400 (1394a) .................. 400MB per second
USB 2 ............................................ 480MB per second
Firewire 800 (1394b) .................. 800MB per second
Serial ATA ..................................... 1.5GB per second
Also note that a non-OEM CD drive won't work natively you'll need a third party driver like "Toast".
Or "hack" the Apple CD/DVD driver (OS 9) using ResEdit.
Good luck!