Stephen D. Barnes wrote: >Am I on the right track? > I know nothing about that series but why don't you just try the divisor based on the other figure? David... -- David, Thanks for the reply. Going to do that in the morning. Thought I would go fishing for some input though. There may be others who get frustrated by this and could use the sage advise of the PICLIST before they get started! I will post my results sometime tomorrow. Regards, Stephen D. Barnes -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu