-Forward the correct TightVNC ports (5500,5800 and 5900) to 192.168.1.3
-Download and install the TightVNC server on your server computer.
-Download and install the TightVNC viewer on your other computer.
-On your server computer, run the TightVNC server and leave it on.
-Right-click on the TightVNC server icon in your taskbar and click on Properties.
-On the "Server" tab, make sure that "Accept socket connections" is checked and that "Display: 0" is the one that's checked instead of "Auto" or "Ports".
-On the "Display" tab, make sure "Full desktop" is checked.
-On the "Administration" tab, make sure "Disable empty passwords" is checked and then go back to your "Server" tab and set up a password for your server.
-On the other computer, then run the TightVNC viewer and enter 192.168.1.3 (if that doesn't work, try your real IP) as the VNC Server and press enter.
-It should then ask your for your password. Enter it and you should be good to go.
Everything should be working. Just make sure you did those steps right.