When I first ordered my late 2007 Mac Pro, I didn't need an AirPort card because my router was set up right on my desk. However, I just moved into a new house and my current internet set up doesn't allow me to have my router next to my pro. So now I want to add and AirPort card. I'm thinking of purchasing from here: http://www.sweetwater.com/store/detail/AirCardMP/ What I want to know is: 1. Will this work on my late 2007, 2.66ghz quadcore Mac Pro? 2. How difficult is it to install? 3. Can I even install it myself or will it have to require taking it to the Apple Store?