In the Raspberry Pi box
Installing tightvncserver.
sudo apt-get install tightvncserver
Set it up at port #1. One can type in any other ports as long as not conflicting with other open ports.
sudo vncserver :1 -geometry 1920x1080 -depth 24
If you do not know your IP address just do "ifconfig" and look for the ip address because you are going to need this later.
ifconfig|grep inet
In another box, (I have an Ubuntu in this case) install
sudo apt-get install xtightvncviewer
To run it simply type in the following
xtightvncviewer <IP>:port
Example: xtightvncviewer 192.168.1.123:1
Other easier option would be to download VNCViewer from Google Chrome Web Store.