I have linux server in my company with all clients on Windows xp and 98.

Is it possible for the windows user to change the password on the linux and Samba server from his client PC ?

Yes....you will have to add similar lines to this in your smb.conf file:

unix password sync = yes

passwd program = /usr/bin/passwd %u

passwd chat = *New*UNIX*password* %n\n *Retype*new*UNIX*password* %n\n *Enter*new*UNIX*password* %n\n *Retype*new*UNIX*password* %n\n *passwd: *all*authentication*tokens*updated*successfully*

smb passwd file = /etc/samba/private/smbpasswd

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