need to your WEP or WPA key depending on how you secured your network. If you forgot to write down your key, the only way to find it is to log on to your router directly. Not something most people want to do. There is an easier way to recover your WEP/WPA key. If it's stored on your computer and you're using Windows XP or Vista, WirelessKeyView (http://www.nirsoft.net/utils/wireless_key.html) can retrieve your keys for you.