You have to access your wireless router through your browser by typing in something like http://(and then some numbers) and then setting up your security there. You can choose WEP or WPA. WPA just requires a password to be used but WEP asks for a password and then generates a passkey. Your wireless router instructions should be able to tell you how to access the admin page for the router. BTW i can only answer for a certain type of router. Different routers may have different set up procedures.