Create a user account package for OS X deployment

InstaDMG includes a utility under the AddOns directory called CreateUserPKG.app. Using this utility, you can create a user account installation package which has a hashed password.
http://code.google.com/p/instadmg/source/browse/trunk/AddOns/createUser/CreateUserPkg-1.2b4.dmg?spec=svn457&r=457