You can now start, stop, pause and get status of an NT service by including this .au3: (needs AutoIt beta v220.127.116.11 or above)
It provides four major functions: _ServiceStatus(), _ServicePause(), _ServiceStart(), _ServiceStop().
For example, status of IIS Administration Service on local machine can be retrieved like this:
$status = _ServiceStatus("IISAdmin")
According to the service itself, $status could be one of these: