so, let's just use macrumors for an example. let's say that macrumors.com is on one server, and forums.macrumors.com is on another server. can they be on the same local network? and if so, how would it know to go to the forums server when someone went to the forums.macrumors.com site? i thought with port forwarding, all port 80 would go to one machine on the local network. am i correct? and so then, each server would have to have it's own external static ip address?