Lock My PC? - Lock your computer when you leave it for a time.
Lock My PC? is an easy in use and compact utility for quick computer locking when you leave it for a time. It shows a lock screen, disables Windows hot keys and mouse.

Why Lock My PC ?
You don't like snoopers. They are always prying into your e-mail messages, programs, data, files, etc. Lock My PC allows you to lock your computer with a password while you leave it for a time.
More info:
hxxp://www.fspro.net/lmpc/index.html