I am new to hooking up dual monitors for my PC. I have done a little research but can't find the answer to my problem. I have an AMD Radeon HD 7570 [strike]driver[/strike] GPU and a DVI-I to 2 VGA splitter cord. Everything is plugged in and both screens are on but it is a mirror image. When I right click and go to screen resolution, there is no option to extend AND the detect button is not accessible. What am i doing wrong?