One click shutdown button

Hi friend
again with new trick to shutdown or lock or reboot system with single click 
for it just create a shortcut on your desktop by right-clicking on the desktop, choosing New, and then choosing Shortcut. The Create Shortcut Wizard will appear.now write shutdown and than next than again write shutdown ..
After completing it just double click on it your system will go shutdown..
But you can do much more with a shutdown shortcut than merely shut down your PC. You can add any combination of several switches to do extra duty, like this:

shutdown -r -t 01 -c "Rebooting your PC"
Double-clicking on that shortcut will reboot your PC after a one-second delay with the message "Rebooting your PC." The shutdown command includes a variety of switches you can use to customise it.
here are some other examples..

shutdown -s -t 02 -c "Bye Bye m8!"
shutdown -r -t 02 -c "Ill be back m8 ;)!"

Switch
What it does

-s
Shuts down the system

-l
Logs off the current user.

-t nn
Indicates the duration of delay, in seconds, before performing the action.

-c "message text"
Displays a message in the System Shutdown window. A maximum of 127 characters can be used. The message must be enclosed in quotation marks.

-f
Forces any running applications to shut down.

-r
Reboots the system


you can also do it in an other method

go to search box in windows 7 and just type shutdown -s -t 3
it will close your system within 3 sec 

Cheers!!!!!