'Launch a process and create a message receiver to pass a message
to the process.
@rtype: L{MessageWrapper}
@return: A message receiver which delivers a message to the process.'

def createMessageReceiver(self):

    p = ProcessAliasProtocol()
    m = MessageWrapper(p, self.program, self.reactor)
    self.spawnProcess(p, self.program, self.path)
    return m
