Can anyone tell me how to add my son's computer to my one care circle? I have installed Windows Live One Care on my Computer, from a store bought installation disc, and set my computer as the hub; now I have installed it on his computer, but can not finish the installation process as it asks me to associate his computer with a subscription. I want to associate it with my subscription and add his computer to my circle, but am not having any success in doing so. Please help. Thank You.