changing opendirectory passwords

[paul]

Hi folks,

we have a "Tiger" server for smb/afp fileserving and a few protected 
webpages authenticating off of open directory without client management. 
IOW, the clients (using mac,win and linux) are not in a "domain" context.

I wonder how clients can change their passwords? The password is of type 
"open directory". I have tried changing the password with ldappasswd 
which does a ldap extended operation to change the userPassword field in 
open directory. The downside is, none of the passwords in password 
server are changed this way (in fact, using "open directory" passwords, 
you don't have a password in userPassword in the first place).

Ideally the password change would update password server AND the 
opendirectory userPassword field. Any ideas?

thanks
  Paul