samba - Aug 2005 - Users cannot change password w/ SMBPASSWORD-Help??

Hello -

Im having a problem w/ my users being able to change their SMB password. 
What is the best approach to allow users acces to smbpasswd to change 
their own passwords when they want?

Right now Im getting the following:

machine 127.0.0.1 rejected the (anonymous) password change: Error was : 
Wrong Password.
Failed to change password for donald

-- 
Thank you
Todd