Using ASP.NET Web Matrix control in VS.NET
See This in MSDN Library
New Server Controls Provided by the ASP.NET Web Matrix
Bill Evjen
International .NET Association
Just read a post in the ASP.NET Forums and found this interesting article on the MSDN site. This is written by Bill Evjen - the executive director of INETA. It mentioned a couple of features of ASP.NET Web Matrix, e.g. SqlDataSourceControl and AccessDataSourceControl
(FYI: If you want to know more about SqlDataSourceControl, I've written an article on ASPAlliance in this topic a few months ago - Data Access Control - SqlDataSourceControl; If you want to know more about AccessDataSourceControl, Mike post a useful thread on the Forum in the past)
A point worth highlight in Bill's article is that section: Using the New Web Matrix Server Controls in Visual Studio .NET
That's a FAQ in the ASP.NET Forum as people face this problem when they develop a web form in Web Matrix, and then deploy and host it on a IIS Server. The reason casuing this is that the New Web Matrix server control come from the new Matrix Framework (aka Saturn) and we have to manually register in the Web server if you want to host web form using these kind of new server controls. Bill wrote a very good paragraphy describing this part over there.