That would normally indicate you have used either an incorrect network key or are connecting to a secured network without using a key.
Connect using a cable and type
http://192.168.1.1 into you browser window. login to the router with the (probable) user name of admin and passord of password. Once your loged in look for wireless setting and security.
Once you have found it change the setting to WPA-PSK and type a pass phrase into the box and save settings
Now disconnect the cable and try to re connect to the wireless, it should ask you for a type the pass phrase in, type that in and you should be connected OK