FLORENCE, Colo. -- Three men convicted in the 1993 World Trade Center bombing sent letters from the Supermax federal prison in Colorado that are suspected of being used by a Spanish terror cell to recruit suicide bombers, NewsChannel 4's Jonathan Dienst reported Monday. Letters from one of those men, Mohammed Salameh were found on Mohamed Achraf, one of 17 people charged in October in Spain for an alleged plot to blow up that country's National Court, the network reported, citing confidential documents from a Spanish court. One of the letters to Achraf, the alleged leader of the plot, reads: "Oh...