It all depends....if you just want to make your wireless invissible you can go into your wireless router and turn off broadcast ssid. That way your neighbors will not "SEE" your network. Now having said that , that is not a security measure because there are programs like net stumbler that will send out discovery packets that will find your wireless. The only way to protect your wireless is with encryption...that is enabled through your router and in the workstation wireless card.....set the router for the strongest setting that your card will accept... wep encryption is good wpa is better.