Hey I was thinking of getting dual monitors and was wondering how it actually works, my current monitor is connected to my graphics card (amd 7850HD). I have an hdmi from the graphics card to a dvi input to my monitor. My graphics card still has the dvi slot free. When I buy the new monitor do I just buy a dvi cable which I connect to to the graphics card into the dvi port on the new monitor? Also do i need any software?