Well the title pretty much says it all.. I know there has been much said about this both here and on the Prune, however no one, to my knowledge, has answered the question..
I have heard of guys at my company going into the Sim. at odd hours in a group with an examiner get an Airbus rating put on a Euro license, but never anyone who gets it done on the FAA, or Boeing for that matter..
Now with all of the talent on here

one of you must know how to do this.. It is easy if it is a recognized authority (CAA, JAR etc), but what if it is not???
cheers for the responses