See if this article can help, Registration-Free Activation of COM Components: A Walkthrough http://msdn.microsoft.com/netframework/default.aspx?pull=/library/en-us/dndotnet/html/rfacomwalk.asp.

>So I tried to Isolate the DLL (compiled as multithreaded), but...
>
>

>Warning	2 Problem isolating COM reference 'vfp9dll':
>Registry key 'HKEY_CLASSES_ROOT\CLSID\
>{6f539c09-98a8-4538-8a79-6d5e9b7eddc5}\
>Foxruntime' was not imported C:\WINDOWS\Microsoft.NET\Framework\v2.0.50215\Microsoft.Common.targets 0 0	
>

>

>*VFP
>DEFINE CLASS hi as Custom OLEPUBLIC
> PROCEDURE hi
> RETURN "hi"
>ENDDEFINE
>

>

>'VB05b2
>Private Sub Button4_Click(ByVal sender As System.Object, _
> ByVal e As System.EventArgs) Handles Button4.Click
> Dim vfp9 As New vfp9dll.hi
> MessageBox.Show(vfp9.hi)
>End Sub
>