It means that you have a wrong key, or the network which you are trying to connect to has MAC filter on. Also you need to check properties of your wireless adapter to make sure that is configured in a right way.
Check your wireless router's documentation on how to find its WEP key. Assumedly your PC/laptop also connect to your router, so they should have the WEP key already or else they couldn't connect.
The WEP key is the encryption code needed to access a wireless router.
that's what I'm trying to find out
The WEP key is the same one your PC or laptop uses to access your wireless router. If you don't have a wireless router, then you're looking at someone else's, the WEP key is actually there to stop unauthorised people like you from accessing it.
'WEP' is a form of wireless encryption. Your PS3 is asking for the same passcode that you use on your PC or laptop, to connect to your wireless network.
WEP stands for Wired Equivalent Privacy - it is a form of wireless encryption which stops unauthorised people accessing a router or encrypted data. On the PSP, the WEP key is the decryption key for a specific router - so you'd use the same WEP key your PC or laptop uses to connect to your wireless router, then the PSP can use it too.
The WEP key is the key for your wireless router, it's the same passkey that your PC or laptop uses to get online.
The WEP key is unique to the installation. There is no master key.
A WEP key is the passcode used to access a wireless router. Assumedly your PC/laptop also connects to your router, you should be able to get the WEP key from those. Check your router's documentation.If you do not have a wireless router, then you don't need a WEP key. Any signals your DS picks up, in fact belong to other people, and the WEP key is exactly there to stop unauthorised people using the network.
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.
It's the same access key you use to access your wireless router. Use the same one that your PC/Laptop uses.
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.