Put together 12 Monitor System but need help managing them

TBA - Which matrox are you using?

 

Matrox G450 Dual Head 32MB PCI Card.

 

In the mean time, using (1) matrox triplehead2go to convert 3 of your monitors into one (with respect to windows) would give you 9 + 1(3) and keep you under the 10 limit.

You plug three monitors into it, plug it into one of the video cards, plug it into the power supply and your 3 monitors become 1 giant one from windows. No software required.