Two monitors with a third touchscreen?

Hi,

I read in another post that that it's not possible to run three spanned monitors and use a 4th touch screen. Which makes sense.

I'm only running two monitors as individual displays and I'd like to add a third touch screen monitor. I assume this shouldn't be a problem, but I'd really like to have it confirmed by someone who is running a similar config. The touch screen would be dvi connected, with a usb connection to enable the touch function.

Hopefully someone can put my mind at ease!

Thanks.