[gdm-list] GDM clickthrough screen

[Yan Seiner <yan seiner com>]

Is it possible to set up gdm and/or X to display a click-thorugh screen 
on login?

What I'd like to do is to display a screen after a user logs in, say 
with xdialog, that displays a MOTD and then has an [accept] [decline] choice.  On [accept] 
gdm then continues to bring up the user session; on decline gdm goes 
back to the login prompt.

It should be doable - but how?  Possibly a wrapper around the user's 
session?  Something in .xsession?

--Yan