[Samba] syncing passwords

[Eric V. Smith]

Tony Earnshaw wrote:
> Craig White:
>>>does "ldap passwd sync = yes" work in both directions? i mean, if i
>>>change password on ldap is also changed the samba one?
>>----
>>depends I guess on which client you use to do that with.
>>
>>ldapmodify ?  No
>>webmin ldap users and groups ? Yes
>>LAM ?  Yes
> And smbpasswd and pdbedit, of course. Hmmm ... it works with the NT user
> manager, too.

Here's the part I don't understand.  How can this work with the NT user 
manager, if it doesn't transmit the clear text password to samba?  How 
is the Unix password updated?  My understanding is that you have to have 
the cleartext password to updat the Unix password.

Thanks.