If you want to build BTS RFID EventHandlers with Visual Studio 2008, here is the project template.
(German version below) Today we presented about Microsoft BizTalk RFID at the TechEd EMEA Developers
I took your project template and created a matching item template of an RfidEventHnadler to enable to add new handlers to an existing project.
You can find it here:
blogs.microsoft.co.il/.../rfid-event-handler-item-template.aspx