Figured this forum was as good as any for making a formal introduction since I'm a mechanical engineer with some aerospace background and a computer scince/engineering hobby. I'm happy Greg gave me the opportunity to moderate this forum. Its something I've never done before but always had an interest in trying my hand at. Anyway, a little background about me. I'm 27 and work in a tiny engineering firm in suburban Philadelphia designing building HVAC (heating, ventilation, and air conditioning) and other related building systems. I spent a little time in the Navy and went to Drexel University in Philly. I use my real name most of the time largely because I think anonymity is a myth anyway (so you can ask me just about anything) and partly because I'm too lazy/uncreative to think of a good nicname. I'm easygoing - its extremely difficult to offend or annoy me, but I do have a few pet peves I'll mention when they come up. But I won't be a heavy-handed moderator. Anyway, welcome to my world.