First open your command prompt.Go to Start-->Run-->type out cmd

Type in Code:Net View

This will give you all the names for all the computers on the network.

Then you want to find a target so write it down for example a name is \\SUNIL-AD1950D6 then you will utilize that name to shutdown the computer.

What next? Next thing to do is type in

Code:shutdown -i

which will give you a Gui interface and you'll be able to shutdown whichever computer you want with it,you can set a timer.

some of the commands useful for the command interface are

Code:shutdown -m //computername

This command shuts down the system.

Code:shutdown -m -c "comment"

This command shuts down the pc with a comment.

Code:shutdown -l

This command logs off the users.

Code:shutdown -r

This command restarts the computer.