Hi, i'm new to macs, looking to pick one up as soon as there is a refresh. Just doing my research and wanted to know what an airport is. It seems to me that it's just a router but i'm not 100% sure. Is there anything that differentiates this from a normal router? I am in the UK and sky is my isp. They provide a netgear router with my log in details installed. Is there any reason i would need an airport?