Thanks for all the info! >Most of the time you'll cause more trouble than you solve >trying to make things idiotproof. Idiots can be very clever. This reminds me of a quote, "A common mistake people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools." - Douglas Adams --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .