Assuming that the following is wrapped in a suitable VB.net project with
register for interop turned on

Option Strict On
Imports System.Runtime.InteropServices
<ComVisible(True)> _
Public Interface IClass
    ReadOnly Property Message() As String
End Interface
<ComVisible(True)> _
Public Class Class1
    Implements IClass
        Public ReadOnly Property Message() As String Implements
IClass.Message
        Get
            Return "Test Message"
        End Get
    End Property
End Class
<ComVisible(True)> _
Public Class ClassFactory
    Public Function CreateIClass() As IClass
        Return New Class1
    End Function
End Class

I now compile this and reference it from a simple VB6 Project(1 form
with 1 Button) thus:

Option Explicit
Private Sub Command1_Click()
  Dim X As TestLibrary1.ClassFactory
  Set X = New ClassFactory
  Dim Y As TestLibrary1.IClass
  set Y = X.CreateIClass
  MsgBox (Y.Message)
End Sub

Now I compile to an exe in the dotnet\Bin folder of the first project

Now this works but I have a few questions.

1.> Why no intellisense For my X Object?
2.> I have seen code with the following dotnet attributes... How would I
benefit from these?
    a.> ClassInterface(ClassInterfaceType.AutoDual)
    b.> ProgId("Some.NameSpace.And.ClassName")
    c.> Guid("SOME GUID")

Thanks very much in advance

Rory