The Triple Head To Go is $300. I'm running triple sli, 3 x 8800gtx, but I think that's overkill. I just wanted to try it
Matrox website should give you more information about video card requirements and what surround (wide) resolutions to expect. then get three identical monitors or at least monitors with the same native resolution. I had tried all other ways but never got it to work right until I got the triple head to go.