GTRE S8 9,000,000 shares GRAN TIERRA ENERGY, INC. S-8 10/19/2007 <a href=' http://investorshub.advfn.com/boards/read_msg.asp?message_id=23881814'> http://investorshub.advfn.com/boards/read_msg.asp?message_id=23881814</a>