I own a packard bell TK85 laptop with HD5470 graphics card and it's connected through HDMI and VGA ports to two external monitors. Using linux, there is no problem: two external monitors and laptop screen works together in the same extended desktop. The problem comes with Windows 7: it does not allow use this 3 monitors at same time, only can use two of them at same time. I'm on latest AMD Catalyst drivers but I can't find the way to enable all three monitors at same time. Any ideas?