I can't tell what setup you are attempting here. Try this on google if you want to add wifi to your existing LAN.
HOW TO USE A ROUTER AS A WAP.
I have a modem Router downstairs that has 2 computers and a printer connected via Ethernet and often a laptop connected wirelessly. I now have a computer, an Xbox and wii upstairs that I wish to connect wirelessly in a home network.
I have purchased a tp link TD-W8960N wireless modem router in order to set up a wireless network upstairs. ie. the downstairs network has the internet connected, the upstairs doesn't.
I am operating windows 7 on all computers but don't know how to set up a network effectively; I can't get the computers or the routers to recognize each other? Could someone point me in the right direction? It would be much appreciated.