Start putty
In Host Name (or IP address) enter the static ip address of your server, you can find it in your control panel on Amahi.org. For example: 192.168.1.55 do not DO NOT enter http://
Leave the Port at 22
in a Putty/Terminal session.
After reboot go to your Windows machin and open Tight VNC Viewer and connect to your ubuntu virtual desktop. VNC Server now starts automatically on boot.
That's it you should now have vnc server start on boot and a virtual desktop for your server on another machine.
Most of this information was obtained from: www.havetheknowhow.com.