I am working on replacing our protocol handler with a Connection Framework component, so that SharePoint will crawl our data source. I think I understand the big picture, but I'm missing a lot of the details. I've read the documentation starting at http://msdn.microsoft.com/en-us/library/ee556429%28office.14%29.aspx. I currently have a working BDC assembly; I know it works because I can make an external content type list from it.
I am currently stuck on step three: "Use Microsoft SharePoint Designer to discover the DLL and create a model". I don't see where to do this at all. Under "Data Sources"? Can I use my BDC assembly for this, or do I have to create another assembly?