Why won't my computer CD drive D: recognize the presence of DVD+RW
disc when it is inserted

You have answered the question yourself.

Why won't my

CD DRIVE

recognize the presence of DVD+RW when it is inserted.

CD drives CANNOT read DVDs, the laser lengths and media formats are
completely different.

--Keystroke-ga

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Clarification of Answer by keystroke-ga on 05 Aug 2006 11:29 PDT

This should also help you understand further as to why DVD formats
cannot be read in CD only Drives.

http://www.imation.com/products/dvd_media/differences.html

--Keystroke-ga

cd drives usually cannot read dvds.

click on start >> run >> devmgmt.msc 

clcik on plus sign to the left of cd-dvd drives in the list and please
post the full name of the device that u see in there,

check if it is a dvd r or dvd rw drive