If I were you, I would read the answers given here again. Not only was the notepad bug (which is really a windows bug, remember?) written (inadvertently) before 911, but the message in chinese signs was mapped to the string "bush hid the truth" as far back as 1987, when the Unicode was established. Don't you understand this? You are not getting a message, you are having a string of ASCII characters translated into Unicode. The reason it only works for some strings is just because they happen to be the only ones misinterpreted by Windows. You could make a program that translated ANY string from ASCII to Unicode, and it would ALWAYS give the same output for a given input, and would have done so right from 1987. Just like translating from letters to morse code would give the same result. (In fact such a "program" could just be a binary editor where you added the unicode tag to your text.)
And the internet doesn't come into it at all, since this also works on an offline computer. It will even work if you do it on a piece of paper.
Now, read slowly, and try to comprehend, OK?
Hans