Windows Key.. Check This !!!

Note: The Windows key(WINKEY) has the Microsoft flag logo on it and is located between the CTRL and ALT keys on the keyboard.

WINKEY + D
Brings the desktop to the top of all other windows.

WINKEY + M
Minimizes all windows.

WINKEY + SHIFT + M
Undo the minimize done by WINKEY + M and WINKEY + D.

WINKEY + E
Open Microsoft Explorer.

WINKEY + Tab
Cycle through open programs through the taskbar.

WINKEY + F
Display the Windows Search / Find feature.

WINKEY + CTRL + F
Display the search for computers window.

WINKEY + F1
Display the Microsoft Windows help.

WINKEY + R
Open the run window.

WINKEY + Pause / Break key
Open the system properties window.

WINKEY + U
Open Utility Manager.

WINKEY + L
Lock the computer (Windows XP and above only).