See, while many desktop video cards offer dual VGA or DVI outputs, it's rare to find one that has three of them. A few squeeze in VGA, DVI, and HDMI, but that would require at least one HDMI monitor. Reader Dave, who asked about this possibility, has three monitors with VGA and DVI inputs only.

You have a few options, Dave. First, you can install a second video card--assuming your desktop has an available expansion slot. Ideally, the second card should be the same make as the first, but that's not mandatory. You can get a reasonably powerful video card for as little as $30.

Next, consider a USB adapter. Search for "USB to DVI" or "USB to VGA" and you'll find plenty of plug-and-play products that provide a standard monitor input. Prices start at around $50, and graphics performance isn't always great (so this isn't the best choice if you're looking to play games across all three monitors).

One last option is to repurpose a spare laptop or even desktop, using software like to add its screen to your primary system. MaxiVista sells for $40.