changing password from NT possible?

[Igor Mammedov]

I can not change password from NT'sp5, it's write "user name or old password
is incorrect". I'am not using plain password.

What I do wrong!
----------------------------------------------------------------------------
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smb.conf
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[global]

;debuglevel = 100
   workgroup = AP3
   server string = AP3 Server
   client code page = 866
   log file = /var/log/samba/log.%m
   max log size = 50
   security = user
   domain group map = /etc/domaingroup.map
   local group map = /etc/localgroup.map
   admin users = nial
   encrypt passwords = yes
   update encrypted = yes
   smb passwd file = /etc/smbpasswd
   unix password sync = Yes
   passwd program = /usr/bin/passwd %u
   passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password* %n\n
*passwd:*all*authentication*tokens*updated*successfully*
   username map = /etc/smbusers
   socket options = TCP_NODELAY
   local master = yes
   os level = 95
   domain master = yes
   preferred master = yes
   domain logons = yes
   logon script = startup.bat
   logon path = \\%L\Profiles\%U
   name resolve order = wins lmhosts bcast
   time server = yes
   wins support = yes
   preserve case = yes
   short preserve case = yes
   default case = upper
   case sensitive = no
   guest account = nobody

#========= Share Definitions ==============================
[homes]
   comment = Home Directories
   browseable = no
   writable = yes
   hide dot files = yes

[netlogon]
   comment = Network Logon Service
   path = /home/netlogon
   guest ok = yes
   writable = no
   share modes = no

[Profiles]
    path = /home/profiles
    browseable = no
    guest ok = no
    writable = yes