serial number generator...

Hello, Please reply to my email address since my webmail program can't handle huge traffic (I can't be on this list). I have been looking for an algorythm which generates a serial number which can be confirmed for validity. Sort of like a credit card number of bank account number (or drivers liscence number etc). Something which is complex enough that people won't be able to guess. Thanks, Tank. ----------------------------- Vea mi perfil en Santiago.cl Encuentra otros amigos mios GetOut - Conectate con la guia de tu ciudad