ZC Uses Allegro BITMAP fonts, not TTFs, or Suitcase BITMAP 
fonts (if you remember these, then like me, you are older than 
dirt). 

If you wish to modify the internal fonts, you will need to open
fonts.dat using Grabber (see Grabber.txt), but if you want to 
CREATE fonts that Allegro can use, you will want to do it with
FontEd.

This utility can be used to create or modify bitmap fonts, or to 
CONVERT TTFs into BITMAP fonts that Allegro can use.

FontEd uses Allegro 4.2, so, on newer Windows systems it will
exhibit the Alt+Tab bug that ZC (prior to 2.53.0) exhibited.

I'm not going to go through the hassle of updating FontEd
(or Grabber) to Allegro 4.4.3, if for no better reason than 
that FontEd has other dependencies that are not supported
AT ALL by ANYONE, including alfont.lib. 

-Z