(12.04.1 LTS)

Need some help:
Running Ubuntu, but my laptop screen is broken, so I have a second monitor hooked up.

Problem 1) It displays on this monitor, but not in the right resolution, and when I try to select resolutions, the one I need isn't there.
Problem 2) It doesn't recognise there is a second monitor, it believes it's displaying on the laptop screen, which could be why the resolution choices are wrong.

How do I get it to recognise that it's displaying on a separate monitor?


Many thanks,

Owe.