Interactive Services Detection
Windows Vista Service Details
If disabled, notification and access to new interactive services won't work
Enables notification of user input for interactive services. This enables access to dialogs created by interactive services when they appear. If the service is stopped, notifications of new interactive service dialogs will no longer function. If the service is disabled, both notifications of and access to new interactive service dialogs will no longer function.
Consequences of Stopping:
All services listed in 'Required For' will be unable to function