MFC Formview Edges: Turning off?

[quantass]

I'm using VC++6 for the PC and have created and app thru AppWizard. I've selected FormView so that I can drop down controls onto the main view area of the form, much like VB6. Unfortunately, on viewing the app theres a border around the view area. I dont want any 3D edges around the view area like a VB6 created app.

How do i go about turning off this 3D border around the formview area? I suspect I must adjust the FramWnd's CREATESTRUCT object:
BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{}

And also, within VC++6, what the hell is a POP-UP Window as indicated under Window Styles?

Thanks.