I've never bought applecare for my mac before (just never bothered on my macbook) but when I got my iMac back in August I figured I could just ask for the extra warranty for Christmas. Well now it's time to get on that list making and I find myself wondering how much information do retailers need in order for someone to purchase applecare? As I said, I've never bought applecare so I don't know how it works. When you buy it do they need your serial and stuff or do you register it online after? I just need to know so I can give my parents all the information if any is needed. I imagine all they need to know is that it's applecare for an iMac but I just want to make sure.