So often I'm hunting around for a code snippet to enable the Service Broker on a database that's already running (as usually it's the task I've forgotten to do earlier!)
Here's the code snippet:
ALTER DATABASE Titan_Reporting SET SINGLE_USER WITH ROLLBACK IMMEDIATE
GO
ALTER DATABASE Titan_Reporting SET ENABLE_BROKER
GO
ALTER DATABASE Titan_Reporting SET MULTI_USER
GO
Don't forget the 'WITH ROLLBACK IMMEDIATE', otherwise you'll be waiting a looooong time for the first statement to complete!