to add your own fonts in bsd:
$ mkdir <fontdirectory>
$ cp <font> <fontdirectory>
$ mkfontdir <fontdirectory>
$ xset +fp <fontdirectory>
additional mkfontdir may be needed as fonts are added to the directory. the xset command is probably best put in your .xinitrc. now all those blackbox themes will look even better with their fonts working properly.