Original poster: "marc metlicka by way of Terry Fritz <twftesla-at-qwest-dot-net>" <mystuffs-at-orwell-dot-net> All, I ran across this web page that is chock full of calculating programs from everything to anything. I thought coilers could benefit from some of it in building the system enclosures and such. Take care, Marc M. http://www.geocities-dot-com/CapeCanaveral/Hall/4425/#shop