Just to throw in my 2 cents:
don't expect this setup being easy,
don't expect this setup being free.
Why? This is a very specialized setup. People needing something like that are either:
Wall St. professionals with lots of money,
construction / engineering firms with money too,
people wanting it and having the money to buy the equipment and time to tinker with it.
I, for one, cannot test your setup. Mine runs (2 monitors on one card). I would have to get another expensive card (ok, I have one), throw it into a computer, reconfigure the comp, get another monitor (only have one and could test a 3 monitor config; would need a 4th to do 4-way testing).
So, conclusion of the above:
you either have the money to pay someone doing it for you,
you have the knowledge to do it yourself,
you have the time to tinker with your equipment and gain the knowledge to do this in the future (and maybe make some money out of this knowledge).
These are the facts and you have to live with them
...before someone starts to flame me being rude: sarcasm intended.