You may want to check with the folks in the Office:mac
newsgroup, (link below) but it would need a 3rd party solution, not
a MS one
=======
Does anyone know how to open an office file that is password protected if the
person has forgotten the password? This is for Office on a MAC >>
--
I hope this helps you,
Bob Buckland ?

MS Office System Products MVP
*Courtesy is not expensive and can pay big dividends*
Microsoft Office:Mac newsgroups:
news://msnews.microsoft.com/microsoft.public.mac.office
or
http://microsoft.com/mac/community/community.aspx?pid=newsgroups
Microsoft Office:Mac products and updates
http://microsoft.com/mac