On behalf of Civ 4 Files staff I'd like to wish you Happy New Year. And a lot of mods for Civilization 4 in 2006 ;)
Due to an assembly error a number of people who have bought Civilization IV received a French language tech tree poster, where an English language one should have been included. 2K Games has opened a site which will give you the opportunity to receive the correct tech tree. Download the PDF version...