I just updated the MLCad.ini file accordingly to the latest LDraw.org Parts Update 2009-03. The .ini file defines (among other thigns) the parts available in MLCad's minifigure generator.
Download the file from my personal website: http://www.holly-wood.it/mlcad/ini-en.html [3]
Willy Tschager
(LDraw Administration Team)