Word 2007 Save As PDF opens Save As box

Hi,

We are having an odd problem on just one computer here. Office 2007
Enterprise is installed along with the Microsoft "Save as PDF and XPS." In
Word, when clicking Save As and then "PDF or XPS" the standard "Save As" box
appears as opposed to the "Publish as PDF or XPS" dialog box. The problem
occurs for all users of the computer (including local admins).

"EXP_PDF.DLL" is present in "C:\Program Files\Common Files\Microsoft
Shared\OFFICE12."

We have already tried the following:

Uninstalled Office 2007 and PDF/XPS
Restarted
Reinstalled Office 2007 and PDF/XPS
Restarted
We have also tried to just install the version of the PDF add on without XPS.

On a separate test machine, I experimented with different permissions on the
""EXP_PDF.DLL" file mentioned above. I was unable to reproduce the symptoms
that are present on the problem computer.

Any ideas would be greatly appreciated. Thanks in advance!