Do This When Idle

Do This When Idle is a very easy to use system automation tool. With this software you can perform various tasks after your computer has been idle for a certain amount of time.
You can Log out of Windows after you computer has been idle, Shut down your computer after it has been idle for some time, Reboot, Lock the computer without logging off (keeps your windows session running so that you don't need to re load everything when you log back in).