How to use the Win32_PhysicalMedia.MediaType along with disc drive   

Using WMI along with the Win32_CDROMDrive class I can retrieve the MediaType, 
which is always CD-ROM.
I found a more specialised MediaType property in the 
Win32_PhysicalMedia.MediaType.
This property would name the exact media type e.g. DVD-RAM, DVD-ROM, CD-ROM, 
etc.

How can I retrieve the Win32_PhysicalMedia.MediaType of a medium in a 
CD/DVD-Drive using the Win32 classes and WMI ?

Suggestions greatly appreciated.

date: Wed, 5 Mar 2008 01:29:01 -0800   author:   diver182