i have try refox and see how eazy my EXE to be disassembled. the refox offer a feature which they guarantee that no one can disassembled. but , is there any other alternative ?
You might look at KONxiSE.
http://www.xitech-europe.co.uk/konxise.php
If you are accessing external VFP apps there might be a problem doing so, but I have heard good things about this tool.