http://www.google.cz/search?hl=cs&source=hp&q=vbsc ript+pc+shutdown&btnG=Vyhled%C3%A1v%C3%A1n%C3%AD+G oogle
konkretne http://www.wisesoft.co.uk/scripts/vbscript_shutdow n_a_computer.aspx
strComputer = "." ' Local Computer
Set objWMIService = GetObject("winmgmts:{impersonationLevel=impersonate,(Shutdown)}\\" & _
strComputer & "\root\cimv2")
Set colOs = objWMIService.ExecQuery("Select * from Win32_OperatingSystem")
For Each objOs in colOs
objOs.Win32Shutdown(1)
Next