What is your thoughts for distributing applcation?
I have developed an application using vb6 and oracle.
Suppose;
I want to sell this to one of my client say "X", I have give this application as either exe or installatable file.

Now what can i do so if client "X" gives this exe to any one else say "Y" then Mr "Y" can't use that without my involvement.

Baic is that I do not want Mr. X to sell this application to Mr Y; only I can.

to achieve this what can I do with my code.