Many thanks to, Nick Szabo, Bill Stewart, Eric Hughes, &, Matthew Ghio, for detailed assistance. This stuff has really captured my imagination. I'll do the right thing and evesdrop for a while, but you seem like mighty friendly folk and I look forward to a chat. Hasan ~~~~~~~ Hasan Bramwell Casilla 17-17-1004 Freehand Quito, Ecuador Internet: Ecuanet hasan@pi.pro.ec Compuserve: 70322,2617