I have an airport card installed on my imac, but don't know how to use it. I got the imac as a spare computer on ebay and now I need to use it. When I go to internet connections and click on airport "jake" pops up. assuming this was an available network I click on it but it asks for a password. How do I find out what this password is? My father is wifi and has a router in the house is there any way for me to connect to that without airport? Help!!! I'm dying without my computer!