Bots are clients (just like vie or continuum). They login to the zone, see player movement/weapons and text, just like a client. Bots control graphics using sysop commands (eg *objon and *objoff). Chat already go across zones. Each billing server links all zones together that use it. All chats and remotes go through the billing server. Other billing server functions include player alias/password/banner, ban control, ?message, ?find, etc.