I'm not sure I understand... I assume you're talking about Microsoft Foundation Classes, which seems to be a UI library. So there's two possible interpretations of your post, which needs some clarification.
Are you trying to...
a) Display an MFC window within the orbiter simulation, or
b) Rendering orbiter inside an MFC window?
I've done things similar to a (rendering an irrlicht scene to an orbiter surface handle), so I think that shouldbe possible with MFC, but nothing like b. I don't think b would work, unless MFC has very specific support to render a completely decoupled process in one of its windows. Since until 5 minutes ago I didn't even know what MFC was, I really can't make any guesses about that.