If u use WinXP or higher or even Win2000, you can automatically shutdown ur pc. I follow this method to shutdown my PC. This way I don't have to bother about shuting down the PC at night while I can enjoy the music played on mediaplayer. Apply the following command at Run to do the job: shutdown -s -t 1200 [ the last 1200 is (seconds) after which ur PC automatically shutsdown.] The once trouble giving BlasterWorm also have used this command (i guess).