Setting Remote Desktop to Ubuntu from Windows
To set the remote desktop to Ubuntu from Windows machine, there are 2 parts;
1) Setting the remote desktop on Ubuntu machine; the details can be found here. After setting that, you will get IP address of the Ubuntu machine.
2) Setting VNC on Windows machine. I use realVNC 4.1.3 [link] which is free, and I just use the default parameters. Using the IP obtained from 1) to connect to the Ubuntu machine.