How do I get my dualhead2go to show on 3 monitors?

I have recently bought a Matrox Dualhead2 go. I'm trying to get 3 individual displays using my iMac as one screen, but can't seem to do it.

I've read that it can't be done using a Macbook Pro unless the Pro has 2 Video Cards installed. Would this requirement be the same for the iMac?
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  1. for that im pretty sure you need the triplehead2 go

    i dont think dualhead2 go is meant for more than two monitors
  2. Check this compatibility chart to make sure your desired setup is available:

    -Wolf sends
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