Usually a WEP key is intentionally hard to recover. It may be that you will need to simply change the key on the router/access point to something known and then change it on all currently connected devices.
To find your WEP key for a WLAN, you can access your router's settings by entering its IP address in a web browser. Typically, this address is something like 192.168.1.1 or 192.168.0.1. Once logged in (using the admin credentials), navigate to the wireless settings section, where you'll find the WEP key displayed. If you cannot access the router, check the device that originally connected to the network, as it may have the WEP key saved in its network settings.
Wireless routers can be secured by using different types of encryption, which require an encryption key to download. So if your router uses 'WEP' encryption, then you'd select WEP on the PSP, before entering the WEP key specific to your 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.
WEP
No. Your WEP key is the password placed on the router you are trying to access.
No protection against war driving
A wep key has nothing to do with Pokémon Pearl, it is your wireless router's password.
No. The WEP key is a separate password.
well, my friend. Everybody has there own different WEP key
No The WEP key is the key used to encrypt the wireless traffic, so people can't sniff the data and see what your doing. No WEP key, no connect to the network. No router password, and you can't log into the router to modify the WEP key.
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.