SUDO Help password change deligation question

[Sean Murphy]

I would like to not give root access but enable a user account (not in 
wheel) to change user passwords with passwd username command.  I just 
would like to delegate the password changing ability to someone else but 
not give them super user privileges other then passwd.  Would this be 
something sudo can do?  can you restrict what accounts passwords they 
can change for instance everyone but system root and my account?