And I'm not sure if Acrobat 11 actually installs a virtual printer even on Windows as I don't have it installed.
Using Mac OS X 10.6.8. I had to upgrade from Acrobat 9 because it wasn't producing a file after I clicked PRINT in the dialog box... Distiller would just run briefly but never actually generate a PDF. You may be right about no virtual printer installed... as the online manual just talks about converting Postscript files made from the authoring software, and I see a "Postscript®" option popped up in the printer list after installing Acrobat XI. Hate having to do another step when on a hot deadline, so I guess I was hoping there was a plug-in and I just missed it.
I'm quite sure the virtual printer was dicontinued for Mac installs since new versions of the OS don't support it.