As promised, here is the list of links / articles / samples that I used for preparing my talk "Build Provider in ASP.NET 2.0":

• Provider Toolkit
• Extending ASP.NET 2.0 Part I: Creating Custom Build Providers
• Jaw-dropping experience with custom build providers
• DLINQ ASP.NET Build Provider and DLINQ DataSource (Andres sent me a newer version for the May CTP)
• RSS Toolkit (sports two build providers, one for .rssdl, the other for .rss)
• Web Services Contract First: Drop Schema in app_code with a Custom Build Provider

Hope you will find those useful.