It's a little unclear what you're asking. If you could give us some more specifics, we'd be able to help you better. Assuming that you are trying to set up VNC on your droplet, I'd suggest taking a look at this tutorial:
Let us know how it goes!
VNC will allow you to connect to your server remotely, as well as be able to use your keyboard, mouse, and monitor to interface with that server. Get it setup on your Ubuntu 12 cloud server.