>One thing you can be sure of, is the fact that .net will replace VB6 development.

Not will but is, as VB.Net is the next goal for VB developers now.

>This is not true for VFP development but we need to know how our VFP app. will communicate with .net app.

Yes, of course, I believe it's good for VFP developers to know how to interact with .Net components.