HELP!!! I went to extend my Applecare on my iMac to 3 years, but online it says that it has already expired. The computer was purchased December 2, 2010 @ 5:54PM. (I have the receipt) Should I just let the warranty thing go, or is Apple Care really worth it? I meant to do this a week ago, but was so busy I completely forgot until today. If I go into an Apple Store tomorrow, can/will they give me an extension on my Apple Care?