just buy a new DVD+/-rw drive like a Pioneer, it burns allso CD-RW so no need for two drives and replace it in the B&W... I used to have a B&W and replaced the cd-rom drive with a CD-rw/DVD-rom (since DVD+/-RW drives were still to expensive at the time).
you would be able to mod the Zip-slot in the B&W it would look ugly, but it still is possible, or do it external FW you can add even more than 2 drives then 😛
J
*edit*
hmm ok just buy a CD-RW/DVD-rom drive to replace your exsting drive... forget to realise you DON'T want DVD+/-RW ;-)