Visual Basic team has given a collection of sample codes for dealing with blog contents in Visual Basic 2005:

My.Blogs is a collection of sample code that will show you how you can easily provide programmatic access to weblogs in the applications you build. The My.Blogs sample code supports reading from blogs feeds (including RSS 2.0, ATOM 1.0, and RDF 1.0) as well as posting entries to blog servers (using the MetaWebLog API).

Read their article about My.Blogs sample codes and download code samples. To install MSDN My extensions follow these instructions.