At http://www.techwarelabs.com/ they have a link to:

http://www.9xmedia.com/pages-Build_a...gurations.html

Where they have a system that lets you attatch how many LCDs you want to different configurations I believe the max it 10.

Also, have other multimonitor products such as:
A LCD wall 4 to 64 screens.
They're working on multimonitor work stations
and have dual and quad head video cards
(They are a resseler of 3rd party cards, just a large list of them)

http://www.9xmedia.com/Pages/Products.html