I've been intruiged for a while with the idea of using SQL Server Express edition as a gateway from HTTP messaging to Service Broker messaging. That is, receiving web service messages through HTTP endpoints and turning them into Service Broker messages to take advantage of the robustness of the Service Broker protocol. Went to set one of these up today...but...HTTP endpoints are not supported on Express edition. Or on Workgroup edition for that matter, you must have Standard edition to define and use them. So you must have at least Standard edition to setup such a gateway.