Andreas Nerlich just published an article called using izpack2exe from an unpacked maven dependency.
I'm sure it will provide some useful informations for those relying on a Maven build process that integrates IzPack installer generation.
Thanks Andreas 
I will give a talk at fOSSa, a free conference that will be held on November 17th-18th in Grenoble, France
http://fossa.inrialpes.fr/2009/?q=content/day_2_workshop_detailed_program