I’ve recently had to turn Mac .dfonts into PC ttf’s and thought I’d share the process
1. Split the .dfont into respective parts
Mac .dfonts are basically containers (like zip files) and contain a number of Mac format TTF fonts. To split them using DfontSplitter
http://peter.upfold.org.uk/blog/2008/03/11/dfontsplitter-convert-dfont-files-to-ttf/
and/or Fondu if you prefer the command line (me!)
2. Convert them to PC TTF
Drag the TTFs into FontLab 4 (a great tool from Fontlab (http://www.fontlab.com/) and then File -> Generate Fonts to get the resultant PC TTF files ready to go
Phew!
Alex