Here are a few useful things you can do with your Windows key under Windows XP…
- Windows Key + E — Launch Explorer
- Windows Key + F — Launch Search for Files
- Windows Key + L — Log off Windows
- Windows Key + M — Minimize all windows
- Windows Key + Shift + M — Undo minimize all windows
- Windows Key + R — Launch the Run dialog box
- Windows Key + Tab — Cycle through the application in the Task Bar
And I always thought that the Windows key was worthless. 