Because things keep changing on the VNC landscape, I've found that latest versions of Linux cannot run with xtightvncviewer any longer for providing a remote listener to UltraVNC's SC help software.

I'm now running Archlinux on one machine, and Ubu-Jaunty on another. Neither can use xtightvncviewer to respond to incoming UltraVNC connections. But after a few hours searching, I found something that can; SSVNC project; http://www.karlrunge.com/x11vnc/ssvnc.html#download.

Karl's excellent project has all you need to do VNC. I downloaded the binaries, selected vncviewer from here: ssvnc/bin/Linux.x86_64, copied it to a new folder and set it to listen like so:

#!/bin/bash
/home/cw/remote/vncviewer -bgr233 -encodings "hextile copyrect" -listen

Save that file, give it execute perms, and set it to start at system startup. Wunderbar.