K, so apple sometimes have the refurbished 2 ghz core duo macbook on sale for 50 bucks less than the refurbished macbook core 2 duo 1.83ghz. Is there a BIG difference between Duo and 2 Duo? I'd rather save the 50 bucks, get 0.17 ghz and a super drive better than buy something for 50 bucks more cause it has a 2 in it. Also, if i purchase iWork06 with a Macbook, is the file compatible to open on a PC? Im just a 11 year old with the money to buy a mac, and sometimes i gotta write my papers at home. Then i email them and print em out at school.