Linksys Wireless Router :: How To Use EA4500 As A Bridge

In my apartment, I can receive the wireless signal of free scholl wireless, which is accessable without user name and password. Although the signal is not good, but we used to use a router EA3000 to relay the signal. Now my roommate is leaving with this this router. So I bought EA4500 and try to do the similar job. However, I find that the configurations on 192.168.1.1 are different between EA3000 and EA4500. Many options cannot be found in the EA4500 page, such as the wireless client.