So I've been playing Civ 4 since it came out, aced I and II, IV is fun to play but has always had me stumped at the Noble level, particularly on Beyond the Sword. I'm sure it's because I don't have the first clue on trade routes with other countries. One articles talks about an Export/Import button on your city screen. Can't see those buttons. Also talks about assigning a boat to the route. Haven't ever seen a button for that either. I haven't seen one article on this that agrees with another. It absolutely amazes me that the game has such an apparently crucial element that isn't explained in the least in the game materials. So I will send a $50 check to the first person who takes me through step by agonizing step for foreign trade routes in a manner that works for me.