There may not be drivers for the Plextor but have you checked for their
firmware updates -- those affect recognition of media.
They are up to version 1.04 now and I see:
Version 1.03 Download (File Size: 467KB) Date posted: July 18, 2003
Added support for newer CD-R/RW media.
The firmware updates are cumulative.
If you are scsi connected (I have a fair amount on board) check out
this Adaptec website if you are using Adaptec controllers and see if
your card is supported in VISTA:
Sorry about the URL -- if it does not work when you click on it, try
clicking on the last line and if that does not work go to the Adaptec
website / Support / Scsi software /
and click on the link at << See all Knowledgebase articles Windows ASPI
Package View articles >> Then select the first listing.