Causes a computer under Active Directory control to execute the shutdown operation with an optional reboot.
HRESULT IADsComputerOperations::Shutdown(
  boolean bReboot  //TRUE means reboot after shutting down
);
 This method supports the standard return values E_FAIL and E_UNEXPECTED, as well as the following:
  Windows NT:  Use version 4.0 and later. 
  Windows CE:  Unsupported.
  Header: Declared in iads.h.
IADsComputer, ADSI Computer Object