unable to open display

[William Hooper]

Robert Van Overmeiren wrote:
[snip]
> Since I can log into the gateway from a gnome client (Fedora), and
> invoke a remote vncviewer successfully, but when I log into the gateway
> from a cygwin client (XP) and invoke the remote vncviewer, I get 'unable
> to open display',

So it sounds like you problem is with cygwin, not VNC.  Perhaps you will
have better luck on a cygwin list?

Have you started the cygwin X server?

-- 
William Hooper