Airport does not pickup preferred wireless network

[MacChris]

All of our Macs when first started begin Airport scanning. They log in to an unsecured network from a neighbors home instead of the network we have set as preferred. We then must select manually from the list of available networks which is quite a lot in our community. Why is this and what can we do to stop this?

 

[jmann]

Go to System Preferences>Network>Advanced, and delete your neighbors network, and move yours to the top of the list. Then if you want you can uncheck "remember any network this computer has joined" to prevent your neighbor's network from being saved.