Just another one to file under the ‘tips’ section (and to make sure I don’t forget these things!) I managed to get a remote desktop connection to the 770 by using x11vnc. First install the x11vnc server software and start it up (I used xterm and typed x11vnc &).
As I was sat in front of a Windows box at the time I used tightvnc to connect. Looking at this webpage will show you something like this on the right.