windows 7 - Maximum number of monitors Win 7 Supports?

I want to set up a system with (9) monitors arranged in a 3x3 grid.

Is this configuration possible with Windows 7? Does it max out at a set number of monitors?

Any suggestions about known working hardware combinations would be much appreciated. Currently considering (3) nVidia Quadro NVS420 cards to drive the array.

Answer

I ended up using a device called a VWBox 133A from IEI to split a display port output into the required 3x3 array.

Posted full specs for all hardware used for the project here:

http://www.oceanbytes.org/2010/10/31/how-to-construct-a-global-visualization-lab/