Microsoft Office Word missing from Edit/Preferences/Convert to PDF

I need to do a batch conversions of Microsoft Office Word documents, but on the machine I need to use, Microsoft Office Word is missing from the list of options under Edit/Preferences/Convert to PDF.

- I do have other Office applications listed, such as Excel and Powerpoint
- Using Acrobat Pro 9 with the 9.2 update
- Using Office 2007
- Windows XP
- Have tried repairing the Install of Acrobat to no avail.

At this point, I can only convert Word documents one at a time by opening each one and going to the Acrobat add.

Any suggestions?

Thanks!