How to make WPF App as OLE object which can embedded in MS Excel ?

Question

I want to make my WPF app as an OLE object which can be inserted and launched from an MS-Excel .

When I open an Excel-2003 and go to Insert->Object a list of OLE object are shown in Create New tab. I want to register my WPF app as an OLE object so that it is also shown in the list. User can able to insert and launch the appliction from an Excel file.