CD Drive letter - This is different to the normal question

[Tel2]

I've got a project that uses an OCX for writing to CD.
It accesses the CD via Adapter, ID And LUN, (Using ASPI)
I get useful information like the Product Ident, etc... but NOT Assigned Drive letter.

I also use another useful OCX for figuring out when a CD has been inserted.
This OCX reports back just a drive letter.

Is there any call I can make to get a CD ROM's assigned Drive letter and product Ident? (As in device manager lists the assigned drive letter etc...)

This way I could know for fact that the CD ROM Drive that reports a CD has been inserted is infact the CD Writer.