Usually, by default, just type 192.168.1.1 in your internet explorere (IE). That's your router's default address. The, in the web page, go to "Security", enable WEP. You need type a word in to generate the key. Then, save the configuration, that will reset your router. After it come up, when you use the WLAN card in your laptop computer, you need to type same word, the generate the same key, then you get the authentication.