also mate try and hard wire your ps3 to the router and see if you can connect to the net that way if not then there is a prob with your ps3 net connection and you would need to contact playstatin.. if it dose work then lyndon is correct manualy set your router this can take a little wile and several attempts to get it right. if this still dosent work then nip round a mates and see if you can connect to there wireless router if not then your wifi is not working and again contact playstation for more advice