There are many times that I want to make my computer
sleep instead of shuting it down, so it would be more convenient to show the
sleep button rather than shut down at Start Menu. Here is the way how to do it:
Right Click the Taskbar and select Properties.
This will open up the "Taskbar and Start
Menu Properties".
Goto the "Start Menu" Tab
At Power button action, change it to Sleep,
click OK to save it
