Total War: Shogun 2 - Eyefinity

[half-fast]

Hello all. Being new to the eyefinity scene, I'm hoping some veterans have solutions Ive yet to find.

Shogun 2 generally runs pretty good for me, as I'm one of the lucky ones who has a slightly laggy strategy view, but straight 60 fps in battles. Just hooked up two more monitors, and every time I load Shogun 2, it already has a triple-monitor-friendly resolution selected, but the game only shows on one screen. Ive tried changing it several times and every time it does indeed switch resolutions, but the outside screens are off. Then when I exit the game, the monitors stay off and the only way it seems to get them back on is to restart.

Any ideas?

Thanks in advance :)