Vitaliy wrote: > However, cost/benefit must always be considered. Exactly. As in moving several tons of metal through rush hour stop and go every work day just to get one person to and from work. The problem with cost/benefit calculations is that they tend to leave out most of the cost. Gerhard -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist