Message catalogs for The Panorama Factory are always called pfactory.po.  Each one is stored in a language-specific folder inside The Panorama Factory's languages folder.  Create a new folder inside The Panorama Factory's languages folder to hold your translation table.  You'll name the folder according to the ISO codes used by The Panorama Factory.

On Windows, the language-specific folder is normally:                                                     

c:\Program Files\Smoky City Design\The Panorama Factory\languages\xx_XX

On Mac OS X, the language-specific folder is normally:

PFactory.app/resources/languages/xx_XXls

For example, the German (Germany) folder would be:

c:\Program Files\Smoky City Design\The Panorama Factory\languages\de_DE

or

PFactory.app/resources/languages/de_DE