Hmmm, java-based inkulator grin That being said, I would prefer open-source for two reasons. First and foremost, I'm a programmer and I'd love to dabble with the code. You'd be amazed at just how much I fiddle with the internals of when given the chance grin The second being, if (as I assume from your above "java 1.4.2" comment) it IS coded in Java, it would not be too hard to reverse engineer the code. Don't believe me? Run the DJ Java Decompiler (http://members.fortunecity.com/neshkov/dj.html) on the compiled class files. You'll be amazed at how readable the result is. While I understand you wish to make money from the work you've done (after all, it is how I make a living) - Java is not the langauge to distribute executables in if you wish to keep the source a secret. Due to the whole byte-code format and restrictions on the class files made for security & compatibility reasons - it is too easy to reverse engineer...