[Osiris]

Mr Byte has produced a very clear guide to disabling the Windows key on keyboards. If you’re a keen gamer, this guide could prove handy as the Windows Key is right bang in the middle of important gaming keys like CTRL and ALT, so it can be easily pressed. Pretty annoying if you are in the middle of a fire-fight and suddenly your PC switches to the desktop.
If like me you never use the Windows Key, then here is how to disable it:

1. Goto Start -> Run and Type Regedit and press Enter (In Vista, type ‘Regedit’ in Search Box under Start)
2. Browse to ‘My Computer\ HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\ Control\ Leyboard Layout‘
3. On the right hand side pane, right click and move over ‘NEW‘ and Click ‘Binary Value‘
4. This would have created a new entry with the name ‘New Value #1‘ with Type ‘REG_BINARY‘ and Data as zero-length binary value.
5. Right Click ‘New Value #1′ and rename it to ‘Scancode Map‘
6. Right Click again and click ‘Modify Binary Data’ and enter ‘00000000000000000300000000005BE000005CE000000000‘
7. Close everything and restart your computer.

if you want to restore your Windows Key, then just delete the new entry that you’ve just created.