You will need Acrobat 9.0 Standard or better and install the optional PDFMaker macros for MS Office. After you have installed Acrobat, you need to set MS Office to allow the PDFMaker macros execute in MS Office applications.
If you have MS Office 2007, MicroSoft has a 'Save as PDF' add-on.
If you have MS Office 2007, MicroSoft has a 'Save as PDF' add-on.
George Kaiser