Event notification plug-ins enable you to control the way that
Windows Media Services responds to internal events. By adjusting the properties of
the Event notification plug-ins, you can specify which internal
events are reported and what action the server takes.
The WMS Active Script Event Handler plug-in is
available only if Windows Media Services 9 Series is running on the
following editions of the operating system: Windows Server 2003,
Enterprise Edition and Windows Server 2003, Datacenter Edition. If
you are running Windows Server 2003, Standard Edition, this feature
is not supported.