Guys - with all due respect to the poster and taking nothing away from your well intentioned responses, to give away technical material such as this, in today's climate, is foolish in the extreme and more than a little misguided.
All the arguments in the world that if it isn't obtained from you, it will be obtained somewhere if a person wants it badly enough ( for good or evil ), just don't wash I'm afraid.
Over-reaction perhaps but my humble opinion.