Microsoft's Patterns & Practices group released last week a new version of the Application Architecture Guide. This book provides you with the best practices in the design of .NET applications. I recommend you read this when planning the evolution of your migrated applications after you reach functional equivalence in the .NET Framework.
Download the Application Architecture Guide, version 2.0
About Jaguilar
Jose A. Aguilar has been working at ArtinSoft for more than 6 years, starting out with Informix to Java migrations and moving on to VB6 to .NET conversions using the Visual Basic Upgrade Companion.
He currently works as both Senior Software Migration Consultant and Program Manager for the Visual Basic Upgrade Companion, helping clients to leverage their existing investments in VB6 by moving them to .NET Framework.