This book is now available from Wrox:

Professional Design Patterns in VB.NET: Building Adaptable Applications
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Want to know how design patterns bring reusable design and adaptabilty to
your applications? How to recognize the need for a design pattern solution?
How to select, design, and implement the right patterns? How parts of the
.NET Framework (like the .NET Data Providers and .NET Remoting) take
advantage of design patterns? This book presents a practical approach to
using design patterns in VB.NET, by focusing on the relevance of design
patterns in the different tiers of a distributed n-tier architecture.
 
http://www.wrox.com/books/1861006985.htm