I am trying to put a password on my Linksys router but I don't know how to do it. I have two computers. One is connected to my cable modem and the other is a laptop and connects to the internet through the Linksys that I have. Model WRT54G. How can I put a password on it? When I connect the laptop to the router it says that it is a public connection and I don't want that. Also, is there anyway that I can network the two computers together to share files? Any help is appreciated. Thanks.