"SoftTH allows using three monitor "triplehead" with Direct3D 8 and 9 games without special hardware. You need three monitors attached to PCI Express video cards. Only one card does all the rendering work, so secondary card can be a low end card, only Direct3D support is required."
I'm using the SoftTH "triplehead" v1.09 rc1 software to run three Dell UltraSharp 3008WFP Monitors. Each monitor at 1600x2560 (portrait mount) + 100 pixel overlap for each join, means I run AH in a resolution of 5000x2560 and the three monitors give me a viewable area of about 56" corner to corner.
To give you an idea of the jump in size this gives, these shots are in scale with each other
Standard 30" Widescreen 2560x1600, 100 field of view set
3 X 30" Widescreen (in portrait mount) 5000x2560, 111 field of view set
The "normal" way to have a three screen set up would be to have all the monitors side by side in Landscape mode
but I found this just emphasizes the felling of looking through a post box (albeit a very large one) and made me feel sick. Portrait mounting helps keep the aspect ratio similar to one large screen but with a slightly larger field of view.
If your trying out SoftTH yourself and your interested, you can view my current SoftTH.cfg file HERE
