Everybody nowadays worrying about the privacy and security of our computer. This is why many of us choose to lock the system before walk away from our desk.
We might usually use Ctrl+Alt+Del to lock our Windows. But now there is a quicker way in Windows Vista on locking your Windows so unauthorised person cannot access to the information of our computer while we are away from our desk.
Simply just hold on to the Start or Windows button on the keyboard and hit the L key.