Just had a thought, a way to get around this on a home (PC) network is to do some form of IP masqerading, where each machine is on a different subnet, with a base server setup to recognise each machine and pass it data as a gateway would. I'm betting that it only checks the local subnet for copies, not different subnets... This is what people do to access a single dialup account from any machine on a network, while the account only serves on IP address. All the traffic is originated from one server which does NAT on the address to make it look normal. Just a thought... later jb