Dear Hans,
I do not work very much with Mac myself. But, as I recall, it is fairly easy to find
and set the language and keyboard options in the recent versions of Mac OS X.
I haven't used it enough, however, to know the details of the keyboard layout.
Perhaps someone who uses mostly Mac can help you with this.
good luck,
Matthew
Matthew Kapstein
Directeur d'études,
Ecole Pratique des Hautes Etudes
Numata Visiting Professor of Buddhist Studies,
The University of Chicago