I do something similar to what Ughmyheadhurtz suggests.

With three boxing, I have the same 1920x1200 monitor, I turn it on it's side, set resolution to 1050x1680.

This gives me two 600x800 panels, and the second monitor (19' widescreen) at 1440x900.

Works like a charm, I can lean back in my recliner and boost away.

Stephen