Hi all; I have a new iMac and a Dell Inspiron laptop running XP. I had a netgear router but it doesn't work anymore. (It is several years old and the laptop can't find my home network anymore, so I assume its not working) Given this setup - iMac plugged into the DSL line and the laptop wireless, should I get an airport base station or airport extreme? Or is there something else I need? Thanks.