PUT YOUR MONITOR TO SLEEP

You can save power as well as money and help protect the environment by activating your

monitor's "sleep" feature in Windows XP.
By doing so you will prevents approximately 300 pounds of Carbon di-oxide emissions each year

from you computer, So be friendly and put youp PC to sleep

sleep means you are allowing it to go into a low-power mode when you're not using it.
To wake your monitor, you simply touch your mouse or keyboard.

STEPS:-
To activate monitor power management ("sleep") settings:
1.Click Start, and then click Control Panel.
2.Double-click the Display icon.
3.Click the Screen Saver tab.
4.In the Monitor Power box, click the Power button.
5.In the Turn off monitor box, select After 10 mins, or choose a time that you find appropriate.