Not only do multiple monitors make you look awesome, rich, and tech-savvy, but they can also help you become more productive--if you know how to use them. Here's how to make multiple monitors really work for you.

Set up multiple monitors

The procedure for setting up multiple monitors can be as simple as plugging in an extra monitor, or it can be slightly more complicated if you don't have the appropriate graphics card.

1. Make sure that your graphics card supports multiple monitors. You can tell whether it does by checking the input ports on the back: If it has multiple input ports (DVI, VGA, HDMI, or DisplayPort), it should support multiple monitors. If your graphics card does not support multiple monitors, you'll want to purchase one that does (consult our top-rated graphics cards chart for more information).

2. Installing a new graphics card is pretty simple. First, uninstall the drivers for your old graphics card: Go to Control Panel, Programs, Programs and Features, find your graphics card, select it, and click Uninstall. Next, turn off your PC and unplug the components. Open the chassis. remove your old graphics card (in some machines, this card is held in place with a screw), and replace it with your new graphics card. Warning: Before you touch anything inside your computer, ground yourself by touching a piece of grounded metal (such as the computer's case), or by wearing an antistatic wristband.

3. Plug your two (or more) monitors into your new graphics card. If the monitors aren't compatible with the graphics card (perhaps because you have HDMI monitors but your graphics card supports only DVI input), you'll have to purchase input converters. Ideally, your monitors will be identical in size, resolution, and type, but if you must compromise, make similar size and similar resolution your priorities, and don't worry too much about similar type.

4. Turn on your computer. If you've installed a new graphics card, your PC should recognize this fact and search for the appropriate drivers (alternatively, you can install the drivers via the card's included CD or DVD). Otherwise, you'll see both monitors working.

5. Initially, both monitors will display the same thing. To correct this situation, right-click on your screen and go to Personalize, Appearance and Personalization, Display Settings. You'll see a diagram showing your monitors, each of which will be identified by a number (if you can't figure out which one is which, click Identify Monitors, and a number will briefly appear, superimposed, on each monitor). Drag the monitors in the diagram into positions that match the physical layout of your setup, and choose which monitor will serve as your main monitor. Once you've chosen your main monitor, click Extend the desktop onto this monitor on your other monitor(s).

Wallpaper your monitors

Now that you have multiple monitors, you'll probably want to make them look pretty. Unfortunately, Windows offers limited support for "prettifying" your desktop, for example, Windows won't let you stretch your taskbar or your wallpaper across two or three monitors.

Luckily, some third party applications will let you do this. I use DisplayFusion, but UltraMon is popular as well.

DisplayFusion has a paid version and a free version. The paid version will get you taskbar expansion and wallpaper image rotation. For the less ambitious purpose of wallpapering your multiple monitors, however, DisplayFusion's free version should suffice.

To install DisplayFusion, simply download it and run the executable file. You'll go through some basic setup, be sure to keep Start DisplayFusion at Windows startup checked so that the program will run each time you turn on your computer.

Once installed, DisplayFusion will exist as a small icon in your taskbar. Double-click the icon to open DisplayFusion and choose your poison, you can stretch one image across all monitors or use a different image for each monitor.

Need help finding an image to span across your monitors? Check out InterfaceLift, Dual Monitor Backgrounds, Dual Widescreen Wallpapers and Wallpaper Abyss for free, high resolution, multiple-monitor wallpaper.

Be more productive

We've all heard that having multiple monitors will make you more productive. Many of the studies touting this finding were performed by monitor companies, which undermines their credibility to a certain extent, still the general consensus is that increasing your screen real estate will help you get things done faster. It's the same idea as having a larger desk. If you can spread your work out, you can move from one item to another more easily.

Still, having multiple monitors won't do much to increase your work output if you dedicate one of them to, say, watching Netflix or Facebook. Here are some tips on how to be productive with multiple monitors.

Use portrait orientation for reading documents. If your job requires you to read documents, set up one of your monitors in portrait mode. This way, you can display an entire document (or more of it, at any rate) on one screen without having to scroll.

Use one monitor for reference work. Since I'm a writer, this is probably the most common use for my second monitor. Instead of having to switch back and forth between windows when I'm trying to find sources for an article, I can have a word processing window open on one screen and a browser window open on the other.

See your Windows windows simultaneously. If you want to see all of your windows at once, right-click your taskbar and select Show Windows Stacked or Show Windows Side by Side. The Show Windows Stacked setting will resize and tile your windows horizontally, while the Show Windows Side by Side option will resize and tile your windows vertically. If you do this while using dual monitors, the windows in each monitor will appear horizontally or vertically across your screens.

Dedicate some of your new screen real estate to widgets. Rather than filling your screens with windows, tack some helpful widgets to the desktop. Useful desktop widgets include to do lists, multiple clocks and calendars, and CPU monitors.

Make comparisons. Website designers can compare websites in different browsers. Photo editors can compare photos. Editors can compare drafts. Shoppers can compare prices... The list goes on.

Try not to multitask. I know this sounds counterintuitive to the multiple-monitor setup, which seems to invite multitasking. But studies have shown that multitasking interruptions such as email, instant messages and a constant Twitter feed make you less productive. Having a monitor dedicated to your email will only distract you from your real work.

Keep your computer folder open in one screen. Though many people don't realise this, you can open files by dragging and dropping them into applications. If you want to open a photo in Photoshop, for example, just drag the file into the Photoshop window.

Multiple-monitor spaciousness on one screen

Once you get used to using multiple monitors, switching back to a single screen can make you feel claustrophobic. Here are some ways to maximise your screen real estate on a single screen.

If you have a Mac, maximising your screen real estate on one screen is easy: Use Spaces, Mac OS X's built-in "virtual desktop" feature. To enable Spaces, go to System Preferences, Expose and Spaces, Spaces, and click Enable Spaces. You can have up to 16 virtual workspaces with Spaces.

If you have a PC, maximizing your screen real estate is still pretty simple with virtual desktops. The only difference is that you'll have to set them up yourself using a program such as VirtuaWin. VirtuaWin is free and officially works with every version of Windows you can imagine. The program, once installed, appears as a small icon in your taskbar and allows you to establish up to 20 virtual workspaces. You can also create your own keyboard shortcuts for moving between spaces, and even name each space.

There you have it, multiple monitors, multiple ways. Enjoy your newfound productivity, and let us know in the comments if you have any genius ideas for multiple-monitor setups!