how do I identify model of HDs in my Mac?

Hi folks-
having an issue with a piece of software and the Company tech support wants to know the MAKE and MODEL of my internal HDs. Any way to get this info w/o pulling drives out of my Mac Pro??

-tried Disk Utilities - no joy
-tried "about this mac" in Apple menu - nothing listed (?? which seems odd!)
thanks
Stu Aull
Alaska

Go to the Apple menu, click "About This Mac", click "More Info".

On the left hand side, highlight ATA and on the right it will show all devices installed. They will most likely want the model number you see listed.

Link to my screen shot to see what I mean -

http://i53.tinypic.com/2hewveu.jpg

My Thanks!!
Stu Aull
Alaska