"Lao Tzu is regarded as the author of I-Ching in general, if you dont' accept that, that's your issue."
Wrong. Lao Zi is considered to be the author of the Dao De Jing (Way of Power.) I don't believe anyone knows who wrote the I Ching - it probably predates Lao Zi by a thousand years. Do you even know the difference between the I Ching and the Dao De Ching? I believe you need to get an education. I don't have time to waste on you, with your lies, misinformation and astounding ignorance.
http://www.simplynumbers.com/html/beyond/iching/sn_bey_iching.asp
You're right, Laozi didn't write it word for word, but the I-Ching TODAY certainly contains mostly his and his follower's thoughts. It's not like a book that's written once and then not changed.
And you also claimed Lao tzu didn't found Daoism, when in fact, he's credited to have done so.