The problem with EVE, is that even in windowed mode, the client refuses to do anything but set resolutions that are reported to it by the graphics hardware. For people who want to have one window span multi-monitor, that means hacking registry and drivers (with stuff like riva-tuner) to make it think you have a monitor 2 or 3x as wide as normal, or running a software driver between DirectX and the normal driver (which kills performance).

You might be able to get the resolution you want by doing something similar. In fact it will probably be easier, as windows puts some kind of upper limit on how many pixels can be on a monitor described in the registry, so the only way to get triple monitor at high resolutions was through the horrible driver method, making dual monitor the limit through registry hacks. There most likely won't be a problem picking resolutions lower than that maximum though.

To give you a further idea of just how bad EVE's graphics programming is, I can run 5x copies of WoW with all settings at max, and all I get is low frame rates. Meanwhile with EVE, my graphics card ramps the fan up to max to cope with heat it's generating on the character selection screen, and has caused several hangs from overheating, just from sitting in station (I'm lucky because EVE got known as a graphics card killer for some models/brands).