Also new out from the patterns and practices group is a set of upgrade guidance for Visual Basic 6.0 to Visual Basic 2005 (and 2003).   You can find everything here but below is short overview of what you can get.

Upgrading Visual Basic 6.0 to Visual Basic .NET and Visual Basic 2005
Guide – A large, and very complete, document to provide guidance and support with upgrading

Assessment Tool - The Visual Basic 6.0 Upgrade Assessment Tool measures application upgrade effort. This tool analyzes the application components and the relationships between them from an upgrade perspective, considering elements, constructs, and features that consume resources during an upgrade. It generates a group of reports that are used for calculations related to task effort and cost. The user can specify configuration values that will override the initial estimation inputs to adapt the assessment tool to their needs.

FMStock Sample Application Before and After Upgrade - Visual Basic Upgrade Case Study that illustrates the upgrade of FMStocks from Visual Basic 6.0 to Visual Basic .NET.