These are re-post for the Windows Seven Shortcut keys for you who didn't read our post before.
Win+UP Arrow :- Maximize the current window
Win+Down Arrow :- If the current window is maximized, restore it; if the current window is restored, minimize it
Win+Left Arrow :- Dock the current window to the left half of the screen
Win+Right Arrrow :- Dock the current window to the right half of the screen
Win+Home :- Minimize all but the current window
Win+P :- Open the projection menu (generally used for laptops connected to projectors)
Alt+F4 :- Close the active window
Alt+Tab :- Switch to previous active window
Alt+Esc :- Cycle through all open windows
Win+Tab :- Flip 3D
Ctrl+Win+Tab :- Persistent Flip 3D
Win+T :- Cycle through applications on taskbar (showing its live preview)
Win+M :- Minimize all open windows
Win+Shift+M :- Undo all window minimization
Win+D :- Toggle showing the desktop
Win+Up Arrow :- Maximize the current window
Win+Down Arrow :- If the current window is maximized, restore it; if the current window is restored, minimize it
Win+Left Arrow :- Dock the current window to the left half of the screen
Win+Right Arrow :- Dock the current window to the right half of the screen
Win+Home :- Minimize all but the current window