Crysis config - Two displays

Hi!!!

I have just installed Vista and I would like to know the perfect config to
play the game smoothly with my system:

Vista Business
Asus blitz extreme mobo
Intel core 2 duo E650 @ 3.00 GHz
2 GB RAM
nvidia 8800 ULTRA

I am playing the game in a Full HD LCD at 1920x1080 but, and I do not know
if it is important, the graphics card is also connected to a small
touch-screen
http://www.silverstonetek.com/produc...=lc18&area=usa
with a maximun resolution that is under 1920x1080, so when I play the game
the screen doesn't display anything.... Does this two-screen config affect
performance? Even when nothing is displayed on the second screen... Should I
disconnect the two-display comfig at the Nvidia Control Panel everytime I
want to play?

Thanks,
Martull @ madrid