MSMQ 到底怎么用啊？

procedure TForm1.Button1Click(Sender: TObject);
begin
  MSMQQueueInfo1.FormatName:='DIRECT=OS:.\private$\qsmsrecv';
  MSMQQueue1.ConnectTo(MSMQQueueInfo1.Open(MQ_SEND_ACCESS, MQ_DENY_NONE));
  showmessage(inttostr(msmqqueue1.IsOpen));

  MSMQMessage1.Body:='test';
  msmqmessage1.Send(msmqqueue1.DefaultInterface);
end;
怎么也发送不成功；大家帮忙啊；