Hello, I recently purchased a new iMac, and during startup, I signed up for the free trial of .Mac. I real like it, and would like to purchase a full subscription. I was wondering can I just renew my subscription with a .Mac purchased from Amazon, since it is 30 dollars cheaper, or do I have to directly upgrade from Apple to keep my current name? I guess what I am asking is, doe the box purchased from Amazon just contain and activation key that I can enter to renew? Thanks.