Pretty neat stuff. A guide with standards and pictures from NASA about how to get things done space style! http://workmanship.nasa.gov/index.jsp Are similar standards used over in the UK? Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist