So I have a linksys wireless router and it works fine. I never secured it though. I thought I should get around to doing it. What is the first step? Do I change the settings on the main computer first? Or the one that is routered wirelessly? What type of security type should I use? There is shared, wpa personal, wpa2 personal, wpa enterprise, 802.1 etc... Also, what encryption type would you suggest? thanks. Do I have to shut the router off while doing this?