Hidden wireless network settings in Windows

Hi,

please can someone advise me on this;
I have Vista on one drive of my PC, and I recently installed Windows 7 on the other. Windows 7 did connect to the internet fine, but now doesn’t seem to be allowed to join the network. I changed nothing that I know about!

I can access the internet via Vista, and have cross checked every setting I can find but they all look the same.

Can anyone help please? .