set the size of a maximized window?

i have a new nvidia video card that allows me 3 monitors - however the first two are 'spanned' giving me a work area of 3840 x 1080 (which is perfect for my video editing), HOWEVER:

when clicking the maximize symbol in the upper right hand corner the application window will spread across both monitors.

is it possible, or is there any software, that will allow me to set the size of a maximized window?

i also get all windows messages opening in the center of the two screens, very annoying and sometimes hard to read....

thanks for your time,

leslie

many thanks for that - have dl'd and will give a whirl.

i suspect that this problem will only get worse as more people look for the 'cheap' option to add monitors ;-(

again, thanks for your time....