[citation][nom]drapple[/nom]I work and game on a Dell 30" monitor and want to add two rotated 20" monitors (1600x1200) to either side. Although it will be great for games I am more interested in how the Adobe applications run. I know they don't support SLI but am not sure what that means. Do they completely stop working with SLI, lose their GPU acceleration completely or have GPU acceleration restricted to one monitor?[/citation]You'll be limited to a single monitor. You might get the option to set it up at a common resolution supported by all three monitors, but even if you get that far it simply won't work (from my experience).
The monitors probably don't have to be identical, but they certainly do have to be nearly identical. In your situation, having dual link on one of the monitors will likely be the thing that breaks Surround mode.