@Ihatecomputers – yes. Quite simple, if you have the PPD file at hand:
On Max OSX:
1. Go to Applications / Adobe inDesign CS6 / Presets
2. Create a folder with the following exact name: PPDs
3. Copy ADPDF9.PPD into that folder
This solved a problem "I" was having. I did not realize I had to have a lowercase "s" at the end of the file name and struggled for days. Uwe, thank you for typing "exact name" in your description!!!