samba - Jun 2002 - Password synchronisation between W2K-Pro and Samba PDC

Hello List !!!
I'm trying to synchronate the password between W2K-Pro, Samba 
and Linux. I'm using the Samba 2.2.4 as an PDC with the 
following Global parameters:

[global]
? ? ? ? workgroup = LAN
? ? ? ? netbios name = testPC
? ? ? ? interfaces = 192.168.0.97/24
? ? ? ? encrypt passwords = Yes
? ? ? ? update encrypted = no
? ? ? ? map to guest = Bad User
? ? ? ? keepalive = 30
? ? ? ? socket options = SO_KEEPALIVE IPTOS_LOWDELAY TCP_NODELAY
? ? ? ? show add printer wizard = No
? ? ? ? character set = ISO8859-15
? ? ? ? domain admin group = @root
; ? ? ? logon drive = K:
? ? ? ? domain logons = Yes
? ? ? ? os level = 65
? ? ? ? preferred master = Yes
? ? ? ? domain master = Yes
? ? ? ? local master = Yes
? ? ? ? logon script = %U.bat
? ? ? ? logon path = \\testPC\profiles\%U
? ? ? ? add user script = /usr/sbin/useradd -g maschines -d 
/dev/null -s /bin/false %m$

But every time when I try to change the password from the 
W2K-Pro, I get a error message like this:
"Your username or password is false, ....check if the CAPSLOCK 
...."

The amazing thing is, that the Linux password (/etc/passwd) has 
changed but the Samba password (/etc/smbpasswd) stayed the old 
one.

Who can help me.
Sorry about my english. I'm just studing it.

Thanks and take care
Marcel Hug