If your copy of Word/Office/Works Suite is a retail version, you will find
the CD key printed on a yellow or orange sticker on the jewel case (inside
the DVD-style case if this is a recent version). If it is an OEM copy (came
installed on your computer), you'll find it printed on the Certificate of
Authenticity that accompanied the software media (CD), which might be in
some sort of binder or in a cardboard case.