Chrish, after taking a closer look at the picture you sent, I noticed that the monitors are of different proportions. One is widescreen and the other 4/3. That *might* make a difference, but there are a couple of "IF's": IF both of your monitors have the same vertical native resolution and IF their panels are of equal height, a two monitor setup could work in AH. This graph
http://www.chrislongley.com/screen_resolution_standards.jpg shows a nice chart of most common resolutions in various proportions. As you can see, similar vertical resolutions are only available in 16:10 and 4:3, namely (W)SXGA+ and (W)UXGA, their vertical resolutions being 1050 and 1200.
So IF you're lucky, your widescreen has a resolution of 1920x1200 and the other one 1600x1200. Combining them you would get a desktop resolution of 3520x1200 which is much more than the widescreen alone. Thinking about AH, with such unpaired proportions your gunsight would be in the right edge of the widescreen. With a lot of luck, the frames of the monitors might cover only the right window pane of your favourite ride...
Before you feel too lucky, I'm afraid the input lags of your monitors could be too far from each other. That means that you might be able to see the same plane in front of you simultaneously in both monitors when it's crossing the frames. Landing could also be challenging, especially on a carrier.