Nice article covering the basics. Covers the same steps that the VS2005 extensions do so good for understanding some of the under the hood aspects.
http://www.codeguru.com/csharp/.net/net_asp/webforms/article.php/c12293__1/
About hangseesing
I'm a Software Engineer by trade, the last few years I've been involved in a large public sector organisation as a Solutions Architect. I specialise in Sharepoint and related technologies.