Hi again - we haven't seen you for a while :)
This is now a problem.
If you are trying to connect to the internet - and have used the network before - then Windows should remember the login details.
You shouldn't need to type in the Network Key ( the password )
If it is the first time on the network then the Administrator, whoever that is, will need to give you the Network Key.
Usually the key is on a sticker somewhere on the router.
If this key doesn't work then the Administrator must have changed it.
If this is the case, we cannot help you by-pass the security on the router.
Can you ask the Administrator for the Network Key ?
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If you are trying to access the router software the problem is still the same I am afraid.
We cannot assist by-passing security passwords.