>A product at
http://www.crypkey.com/ will do the trick.
>It's slightly expensive but refox and any other decompilers
>are powerless against it. It works for VB apps too, which are
>also vulnerable to decompiling.
>
>HTH,
>Ed
Or you could buy Refox and apply its cryptation to your app with a password protection.
Vidar Johannessen