In this article on the Wireless Development Network Richard Bloor runs through an article on the Mobile VB systems and goes through a hello world example.
The WDN has roughyl weekly articles on some aspect of developing for Symbian, previous articles have looked at developing with UIQ using the Metroworks software.
This article looks at and examines how MobileVB integrates with Visual Basic, then it overviews the development process and reviews the available support material. If your interested in the Mobile VB system, this article offer a good independent introduction.