Game on 3 monitors

I am not sure how to do this? I want Ghost Recon Future Soldier split on 3 - 22" 1080 P Screens no luck searching forums. I have never done this before. If I am posting in the wrong section please let me know. I am new to multiple monitors in this fashion . Any help is appreciated!
Thanks again.

I take it the game has no option for that resolution

What type of graphics card are you using? If I remember correctly, GRFS supports multi-monitor resolutions. So, you'll have to turn on Eyefinity by making a display group if you are using AMD graphics or NVIDIA surround if you are have NVIDIA. There should be instructions on the either website that will walk you through the process. I suggest you check there first then come back with any specific questions and reference the instructions you are using. I put a link below for NVIDIA instructions as an example.

https://nvidia.custhelp.com/app/answers/detail/a_id/2667/~/how-do-i-setup-3d-vision-surround%3F

I sometimes game on 3 monitors for GTA V and Elite: Dangerous The steps described in the link above is pretty much how you do it for dividend cards, and AMD has a similar solution called eyefinity. Not all games will support this properly, older games like project reality: BF2 wont scale the fov for the new resolution so you end up chopping off top/bottom parts of what you normally would see.

Keep in mind that while playing in 3 monitor mode, the image gets stretched the further out you are from the center monitor, Some people are bothered by this while others are not. I am fine with it as long as I don't look directly at it and use it only for peripheral information.