Right click your desktop, properties, settings it should show 2 shapes representing the 2 screens. You can change the resolution on either screen, they do not have to match. If you cant see the two pictures do the following: right click desktop, then click on your video or graphics card settings. There should be an option to use or set up dual screen mode. You can usually adjust the screen resolutions from there too. But sometimes after changing some settings, they wont take effect until you reboot. And yes, tv's and monitors can have the same resolutions (assuming they can match each other in pixels) its just that the monitor might be a little clearer image, unless you have a high def tv.