Sorry for the lack of information in my last post. I will try and explain it better. Its only when I'm browsing the web. A box will pop up that looks similar to the one you showed and ask for my username and password. At the top of this box is the address of the website I am currently trying to load instead of saying "enter network password" like is in your box. Other programs can still access the network such as instant messanger. It just blocks me from loading any website.