That depends on what operating system you are using. Are you referring to the computer not logging on, or the sites you want to log onto requesting a password. If you are using OS 10 go to utilities and reset Airport in your computer. I'm not certain how you would do that in OS 9 but feel sure someone will be along with that info. As to the sites requiring a password you will have to obtain that from the owner of the site. Good luck. Ralph