default fonts in structured interface

Dipping a cautious toe in the exciting waters of structured documentation; or, rather, trying my hand at using structured FrameMaker instead of / as well as my usual DITA IDE.

First minor question:

The Courier font is not available
The Zapfdingbats font is not available

Quite right; they aren't! so, how do I persuade structured FM to use something else, from now on and for ever? I'll probably have more interesting questions later ;-}