i'm guessing that you have a 2wire router. you can change the password by going to gateway.2wire.net i think, but it also depends on some other things. if there is only one computer attached to the router, then the bottom light won't be on, but if there is more than one computer attached to the router, then it will be on because it is acting not just as a modem, but as a router now (with only one comp hooked up to it, it doesn't do anything but act as a modem) is there any other computer in the house? if not then other people are accessing the router, but you have nothing to worry about. they can't put anything onto your computer like that, and if you play games or stuff like that then you won't get any delay because you are connected as the primary. if it isn't a 2wire router then my advice may not be completely right, but it should still apply.