You mean like an ActiveX control? Check out the Interop Forms Toolkit. It's for VB, but I think it may work for VFP too.

http://msdn2.microsoft.com/en-us/vbasic/bb419144.aspx

Craig Boyd has done some work in this regard, so check out his blog. Maybe some of his work is in the Sedna CTP.

http://www.microsoft.com/downloads/details.aspx?familyid=cc84f749-a153-4929-8277-deb9a2f8b0a5&displaylang=en

>How do I create a COM-Enabled control in C#.Net? I want to build a control
>that I can run in VFP.
>
>Thanks