Thanks. The problem is that as far as I know Windows can't run a program that is encrypted im memory, so even if the encryption algorithm is very strong sooner or later it will be decrypted to go to memory for excution, and then a memory dump can be performed.

>You might find help here: http://www.netlib.com/file-encryption.htm
>they says that "If you are a Visual FoxPro or MS Access developer, you can even use Encryptionizer to protect your source code!"
>
>AT