You should be able to connect automatically to the Northwestern Wireless Network with your Net ID and Net ID password through your Network Preferences.
Try a different laptop to see whether it has the same problem.If multiple clients are unable to connect, follow instructions in our wireless network troubleshooting tip to debug probably AP or router or upstream network problems.Otherwise, proceed to step 2 to debug the affected Android client. Before going any further, make sure that your Android device's Wi-Fi radio is not in Airplane Mode and that Wi-Fi is on and ready to connect. Try a different laptop to see whether it has the same problem. Once your computer is in range with the wireless network profile that is saved on your computer, it will automatically attempt to connect to that wireless network you have previously connected to. Make sure that the WLAN light is on or flashing, check the settings whether the SSID is broadcasted or hide. When you connect to a wireless network, the settings and profile of that specific network is saved on your computer so that you won’t have to re-enter your network credentials, such as the wireless security key to connect the next time.
After initially setting up the Win 7 laptop, in the case of the others I was asked for the security code and the connection was duly established.