All i can say is, you havent played a Bethesda game properly until you play it in eyefinity.

Seriously fallout 3 looked amazing, you honestly dont notice the monitor bezels while your playing.
I play Rift and all my MMO's in eyefinity as well. i couldn't go back to a single monitor.
If you look at some of the bethesda company videos, you will see alot of them are also using multiple monitors.
Anyway all you need is 2 extra monitors, and a standard ati card. (cost of monitors is cheap nowadays)