The router will have an administration page, normally accessible with a browser, where you can reset the network key. I assume the key is for a wireless network, so you can access the router without a key by hooking up with cable.
If you have lost the password for the administration page as well, the router can be reset to default settings with a tiny button somewhere on the box. (The reset button is normally so small that you need a pen or similar to push it.)
To find the administration page and the default password, check the router documentation. You can normally find the details on internet when you have the router make and model, or you can contact support department of a computer store.
Ask the owner of the network.
Protected wireless networks have a key to gain access to it. If your key does not match the key which is set in the router's settings, you get network security key mismatch error.
Check security setting for wireless network in your router settings. Some routers allow to see the key, some mask it with asterisks. If your router masks the key (in router settings), you have to put a new key, if you want to connect more computers.
You need to log on your router go to security settings for wireless network and change the key. Because of security concerns the key is shown as asterisks (little stars) only. So basically you cannot recover it. The easiest way just to enter a new key. Also look on the bottom of your router, some routers have the wep key labeled on the bottom, if you changed the key from the default, reset your router and it should reset to the default key.
You may have to enter a password or WEP Key. You can find this on a card that came with the router. Or on the back of the router.
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.
well, my friend. Everybody has there own different WEP key
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.
stub router.
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.
Router is Bypassing to, system Network local Network and Internet or Network Regards NASEER
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.