>1. Is it possible to send parameters back to the originating FPW app ?

I would use a table to pass lots of information back and forth. I have a about 5 VFP apps that do this so they can use MAPI and all that jazz in a FP2.6 app.

>2. Is there a way of telling if the VFP app is running, and if so some way of calling it from FPW.

You might want to start on new thread on this one