Compile it with Molebox.

That worked for me. On top of other advantages, no VFP dll is left around. That does not mean that a cracker would not find out or a sophisticated software developper with a view on VFP look'n'feel would not guess. But that is a more than decent solution. On the verge of brilliant.

Molebox is not alone in the league of "virtualizers" but it worked for my application. Be aware that the molebox development process not always stable (I do not use their most recent built that broke my app but an older one).