See
http://www.adobe.com/support/techdocs/330984.html "PDFMaker
is unavailable in a Microsoft Office application (Acrobat 7.0 on
Windows)".
Murray wrote:
The Acrobat icons on my Word 2003 toolbar disappeared. I reinstalled Acrobat
7.0 Pro but the icons have not been restored to Word. They appear on other
MS programs.