Possible Duplicate:
Windows 8 start screen on secondary monitor
I have Windows 8 Professional x64 running on a custom build desktop with an AMD Radeon HD5850, with the most up-to-date display driver. I've set my middle display to be the "main display" in Windows, however the Start Menu (modern UI) still shows up on the left-hand display.
How do I change the display that the Modern UI renders on?