In building A there is a high speed connection with one PC. No switch or router ( as of right now ). What I want to do is add 2 more computers to this high speed connection which are located in building B. Building B is about 300-400 feet away from building A. I thought running an ethernet cable from a 4 port router in building A to a wireless router located in building B. How do i configure the router in building B to take an ip address on the same lan and same WAN as building A?? or is there a better solution maybe a switch or a something instead of 2 routers???