password recovery question

my friend (idiot) registered for some site, and when he entered username and password for login, he was offered from mozilla to remeber them, what he did. Now he cant remember that password even its stored in mozilla. The problem is, how can he see what is that password ? (he cant send mail to site for password change or recovery…)
Answer #1
Grab PCWizard. It’s free.
www.cpuid.com/pcwizard.php
Edit: On the config tab, passwords icon… shows you all passwords stored for web pages
Answer #2

Answer #3
worked! THANK YOU !!!!!!!!!!!!!!!!