> Before sending my last e-mail, I've already done what you advise me to
> do  (using .rhosts file ) and it dosen't work. I used to work with
> .rhosts file in other UNIX system.

Check that .rhosts is owned by the user in question and not writeable
by anyone else (per hosts.equiv(5))

Failing that I guess you need to send-pr.

--sjg