I'm reasonably computer literate. I have three computers networked in my house, all desktops and linked by cables to a router and all running XP. I'm giving my wife a laptop running Windows7, home pro edition for Christmas so she can sit in the living room and use google to prove me wrong.
Anyway, I've also bought a wireless router. I intend to just plug the cables in to the new router from my old computers as they're not going anywhere, but, I'm a complete newbie as to wireless and Windows 7. How do I link up my wife's computer to the network? How do I make it secure so that unauthorized users can't access it?
Any advice on how to do it, or, a link to some place that explains it step by step would be greatly appreciated.