If you open the Solution Explorer, you will find a References section. Semantically this is identical to the Visual Basic 6 References. The steps for adding a Reference in VB .NET are pretty similar to the steps for adding a Reference in VB6.
Here are the steps to add a reference to your project:
You can add .NET assemblies, COM objects, or references to dependent projects in the current solution. (Adding a project reference was done in ClassLibraryDemo.sln in Chapter 1. A test application for the class library needed a reference to the class library while it was under development. Use the Add Reference dialog box to make interdependent applications under simultaneous development accessible to each other.)