Be sure you fulfill the following requirements before attempting to change synchronized passwords:
Both the UNIX password and NT password are identical.
You are logged in as the user whose password is being changed.
NIS/NIS+ is enabled.
Press Ctrl+Alt+Delete and then click Change Password.
In the Change Password dialog box, type your user name in the User Name box.
In the Domain box, select the NT domain.
The NT Domain displays your PC name.
Type your old password.
Type your new password, and then type it again in the Confirm New Password box.
You will see two confirmation boxes, one from Windows NT and one from Solstice NFS Client.