In the newest issue of American Heritage of Invention & Technology magazine (Spring, 2003.) there is an article on the Houston Spaceflight Center. In it it details the history of the MCC from its inception to February 1, 2003. Included in this history are details of the systems used to control the United States manned spaceflight program. (Originally (5) IBM 7094s). All in all a most interesting article. Pick up a copy at your local large chain bookstore. Or subscribe! <http://www.americanheritage.com/it/index.shtml> Jim -- If there is light in the soul, there will be beauty in the person. If there is beauty in the person, there will be harmony in the house. If there is harmony in the house, there will be order in the nation. If there is order in the nation, there will be peace in the world. ~ Chinese Proverb ~