I just installed x11vnc and it works beautifully. Give it a try. need to be in red pill(search for threads that show how to) mode before you install. I could not get the icon in extras to load because when I installed I was not in red pill mode (read about it after install)so I went into xterm and typed after sudo gainroot and hit enter, 'x11vnc' and then went and open VNC viewer. Then went to PC and open TightVNC viewer and put IP address of my n800 and YAHOOOOOO!!! I have my n800 screen on my PC with XP. It has a file transfer menu on top but it's not active. I will play around and report later when I figure out more. But I think this would help you out.
Hope this helps, Dan