Annoyed

Hi, I just installed vista on my computer but when i try to connect to the
internet either by wireless or by and ethernet cable it comes back saying it
can't connect. (I did the guided set up and this is what it told me)

I know the internet work is running, the other computers in my house have no
problems. I am a new Windows user and I don't know all the little tricks, so
I am probably overlooking something really simple.

Any help would be appreciated.