Why Microsoft haven't included this functionality in Windows 8 already is a real mystery, so thanks Stardock!
Just a couple of bugs I noticed:-
1) Opening the Start Menu, on the right hand side under Apps, Settings and Files, the icons below these cannot be clicked.
2) Using the scroll bar to scroll along, sometimes the scroll controller just randomly disappears
Other than that it's exactly what I wanted, a way to quicky work with the Metro Start screen without leaving the desktop.