i haven't tried this yet because i have a windows key on my board.
I can't remember where i found it but give it a try and post your results.
"No Windows key?
Create a shortcut to Sysdm.cpl (you’ll find it in the %systemroot%\System32 folder) and place it anywhere in the Programs menu. Then open the shortcut’s Properties dialog box and assign it an easy-to-remember keyboard shortcut such as Ctrl+Alt+Shift+S.
(try to give it a shortcut like F-12 or something.)
Some laptop keyboards may have separate keys for Break and Pause, and you may find this dialog box opens if you hold the Windows key and press Pause. "