[Samba] Sync passwords unix/smb with FDS backend?

[Deas, Jim]

Using simple authentication I have been able to tie FDS to Samba 3.x.24.
Knowing that the unix passwd and smb passwd are different, dare I ask
how difficult it would be to have them sync? Most of my users are using
netatalk w/ posix user info and MD5 password. I would like to swing this
over to samba without the worries of two passwords per user. I have seen
blips on this but not directly related to FDS