IN  tDGRAM_SEND_TRACKING    *pTracker,
  IN  PVOID                   pClientContext,
  IN  PVOID                   ClientCompletion,
  IN  PVOID                   CallBackRoutine,
  IN  PVOID                   pDeviceContext

Routine Description:

    This routine simply queues a request on an excutive worker thread
    for later execution.  Scanning the LmHosts file must be down this way.

    pTracker        - the tracker block for context
    CallbackRoutine - the routine for the Workerthread to call
    pDeviceContext  - the device context which is this delayed event
                      pertains to.  This could be NULL (meaning it's an event
                      pertaining to not any specific device context)

Return Value: