You have installed two different Adobe products. So when you say "the doc opens in Adobe", we still don't know whether it is Acrobat Pro or Adobe Reader.
Are you able to start Acrobat Pro from the START menu (assuming you are on Windows)?
In the Printers Control Panel do you see the printer called "Adobe PDF"?
If the document is already a PDF, I don't understand why you want to print it to PDF?