I was not getting any results either in a new database until I ran this script to enable the serice broker in my database:

ALTER DATABASE [DatabaseNameHere] SET ENABLE_BROKER

from 2005 books online:

ms-help://MS.SQLCC.v9/MS.SQLSVR.v9.en/udb9/html/ac7e4c7c-e52f-4883-8f3c-9336cc77a9c8.htm

hope that helps....