thanks for replying I'm a complete newbie (sry ), so after saving as .desktop file , how do I have to place it in /usr/share/applications/hildon/ ? the app can lock and unlock the device by pressing it on desktop ? Oh god , I have to learn basics of linux lol Cheers.
root apt-get update apt-get install leafpad leafpad /usr/share/applications/hildon/lockdevice.desktop