converting .docx to a pdf using Acrobat X, it says file type unsupported.

Please Help! When I try to convert to convert my .docX to pdf using Acrobat Pro X, it says file type unsupported.

When I use "save as" "pdf" in Word, it allows me to save the file as a pdf, but then the URL links in the resulting pdf will not work. They all say page not found. (The url links work in the Word document.)

I am using a Macbook pro, 10.6.8; Microsoft Word 2008 for Mac; and Acrobat Pro X

Any help, greatly appreciated.