Hello, I just bought the Imac 24inch 3.06 with 2gig of ram and the 750gig hard drive, My questions were should I buy the Applecare ? I havent yet and was thinking about getting it. Is it worth it ? Did I have to buy it when I bought the computer or can I buy it now ? 2nd, I only went with 2 gigs of memory from apple, but want to go up to 4 gig, who should I buy it from ? any ideas who has the best memory for Imacs? Any how to guides on how to install it ? Thanks !