A second display helps you see more and work more efficiently. Here's how to add a second monitor to your PC and laptop.

First check to see whether your graphics card supports multiple monitors. If it has more than one input port, it probably does. Plug two (or more) monitors into your graphics card. Ideally, the monitors will be identical in size, resolution and type.

If you must compromise, your priorities should be a similar size and resolution, rather than type.

Turn on your PC. Both monitors should turn on by the time you reach the Windows login screen. By default, they should show the same image (an arrangement called mirroring). Next, navigate to and adjust the settings.

Right-click on the desktop and go to Personalize, Appearance and Personalization, Display Settings. You'll see a diagram showing your monitors, with each identified by a number.

Drag the monitors in the diagram into positions that match the physical layout of your setup, then choose which monitor will serve as your main monitor. Select the second monitor and select the option to 'Extend the desktop on to this monitor'. Click Apply to save your settings.

Download DisplayFusion to get more from your multi-screen setup. This free utility lets you choose different desktops for each monitor and adds a few attractive Windows Live Widgets (gallery.live.com) that take advantage of some of that extra space.

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