running X on localhost with different user

[Alan DuBoff <maestro@SoftOrchestra.com>]

In XFree86 3.3.x, it was possible to allow the localhost to be able to use the
X server so that you could allow the localhost access, change users and run as
that user.

I remember a friend mentioning that XFree86 requires something be put in
.Xauthority, but I wasn't sure what it was.

Can some kind soul supply me with the setting in .Xauthority that will allow
that?
(possibly a Michel Dänzer question)

-- 

Alan DuBoff
Software Orchestration, Inc.