Access your router, preferably by wired connection. Then, look for either 'Wireless' or 'Security Settings' and fill in the form.
Note that some devices such as the DS Lite only support WEP, and don't support WPA.
You set up the WEP key when you set up your wireless router.
A WEP key has nothing to do with your DS system but the WEP key is the password that is needed for secured wireless modem networks when you're trying to set up the connection with other devices. Most default WEP keys can be on the router or the modem already but if the key isn't a default one then you'll have to ask whoever set up your modem or Router for the WEP key.
Yes you can set up a WEP on any router, but WEP is not very secure.WPA and WPA 2 would be a better way to go.
The WEP key is the encryption key your wireless router uses to stop unauthorised people accessing the network. When you set yours up, you'll have set the key so your computer or laptop can access your network. All you need to do is use that same key on the DSi to access the network.
You configure them when setting up your wireless router. The SSID is the 'name' it broadcasts, and the WEP key is the code a device needs to be able to unencrypt data sent by it. Once you've got the router set up, you can enter the SSID and WEP key into the DS, to allow it to connect to your router.
No, that is the part number. The WEP key is set by whoever originally set up the network. It is part of the configuration and is usually not recorded on the access point or router.
A WEP key is get up off lazy butt and find it out your self
A WEP key is set on a wireless router its not a code to play on xbox.live.
The WEP key is the encryption code needed to access a wireless router.
The WEP key is unique to the installation. There is no master key.
Probably 578511 is an error indication but i know that a wep key has to have letters in it so 578511 is not a wep key.
You get it from the person that set up your Access Point. He or she has set it,