Ultramon

i recently downloaded ultramon and was wondering how i can get my image background to show across the whole screen but letting me maximize programs in each monitor.

Before i was using windows and nview with it on horizontal span letting it go across the 2 screens but if i maximized a whole program it goes over both monitors and error messages and the like were centred and broken over the monitors.

Oh, and if anyone is interested i just got 2 samsung 940b (19") and they’re an awesome monitor