Airport Express as WAN?
I am excited that I am finally switching my IP to an apple supported company and will be buying a airpot extreme and express this weekend to create a new network. My dilema. We have a solar panel system, with the control unit in the garage, that needs to be connected to the internet to provide system performance to the company. I am going to create my "main" wifi and network with the extreme in the office. Can I use the airport express as an extender? and will it provide internet access point in the garage? Which port plug would I put the solar systems RJ45 cable in?
iMac, OS X Mountain Lion (10.8.2)