VNC performance

[Henrik Nilsen Omma]

I need to run a VNC session with Ubuntu as the host and winXP as the 
client. When I set up the 'Remote Desktop' (gnome-vino), I get a working 
connection, but it's _very_ slow to update and the Ubuntu machine (an 
oldish laptop, at 850 Mhz) is struggling. top reveals that is in fact X 
that's working hard. I'm running tightvnc 1.3-dev5 on the client machine.

I installed the tightvnc server on Ubuntu. I runs, and the machine 
doesn't seem to struggle. However, it starts up on display 1 (0 being 
the active one). I can connect from XP, but get only a blank X-screen 
(background and X-cursor). That may, of course, also be why it doesn't 
work so hard.

Does anyone know how to
a) improve the performance of vino
b) get tightvnc server to use display 0
c) or start a new Gnome session on display 1 from the remote window

I do have an ssh server running on ubuntu, so I could log in there in 
parallel to issue commands to X (but what?).  It might help if I could 
reduce the resolution to 800x600 (currently 1400x1050).

Any suggestions?

  -  Henrik