right clik then choose new then shortcut.. then type
Shutdown -s -t xx -c "Comment"
xx means time Example -t 10 (it is ten seconds)
-c means comment Example -c "Hello" (message Hello)
then clik next then type the name of this shorcut then finish..
try to clik it then it will show the time before it shutsdown
Note: 10 (ten) is the lowest time.... it will not open if you choos 1,2,3,4,5,6,7,8,9..................
^^_