Include C# form (or usercontrol) in a VC++ 6 dialog

Hi,

I have an old application written in VC++ 6 and I want to include a form (or a usercontrol) written in C# in a dialog box (unfortunatly, I can't upgrade my old application to use VC++ 2005). I add an ActiveX interface to my C# projet to create the form. It seems to work but ... the form is not linked with the dialog (the dialog must be the parent) and when I move the dialog, the form don't move ...

Do you have any solution

Thanks a lot.