If I were you, I would make a PHP web page that people have to go to in order to change their password. This way you can control how many characters long the password is and what is contained within the password string.

On the other hand, you could probably integrated a PHP or Perl script into an existing program to do this as well. It's fairly easy to do, and doing it yourself insures 100% accuracy of what you want. You would also be able to go back and make changes to the script any time you need to change password requirements.

D'elTarra