replace the 19" with a screen that can do 1920x1200 is what I did.

With PiP I can switch easyly a alt to the main screen. (single computer setup)

My maximizer (keyclone) is configured for a 1920x1200 resolution which automatic scales to 1920x1200 div 2 on the second screen for the alts.

Some of the Alt addons are scaled to 2.0 to make them good visable (e.g healbot, decurse, MINIMAP)

Check out my profile on the Wiki to get the picture.

cheers