From the APPLE STORE I just bought a refurbished laptop. The link is: http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wa/RSLID?nplm=MA515LL/A It's a powerbook. Once I recieve it, how do I hook it up to the internet? I know lots of people can get free wireless with just a card. What kind of wireless card do I buy? Do wireless cards work on mac and do i need to sign up and pay monthly for internet? ANY ADVICE?