i subscribe to cable along with an additional block of 4 IP's. therefore until now, i've never bothered with NAT or wireless, as i just used a hub/switch with the modem attached to the uplink port and all my client computers connected to the hub/switch's downlink ports (each client with their own software firewall installed, of course). i'm currently just trying to see if i can keep this general setup, but also have one of the public IP's be assigned to a WRT300N router. the problem is, if i connect that router to any of my EZXS55W switch's ports, all the other systems lose their connection. apparently my router needs exclusive access to the cable modem. thus i can't seem to use BOTH my extra public IP's AND a wireless router at the same time. ie, if i turn off or unplug all the other computers from the hub, the router will pick up an IP. and vice versa - unplugging or turning off the router will revive internet connection for everyone else connected to the hub what's happening? basically, what i'd like to do is: keep the separate public IP's for some more dedicated server-like applications, meanwhile the rest of the network for casual internet use would share the router's connection. ps- the MAC address is NOT cloned, if that matters.