Cannot access internet wired or wireless

I have 3 computers hooked to my network (1 wireless) all working and have internet services. I have another one with a fresh install of Win 7 Home Premium that I cannot get on the Internet with. I can see all of my computers in windows explorer and can ping all of them but cannot get on the internet with the new one. I have compared all Ipconfigs and they all seem to be about the same. I...