Hi, i was thinking about buying a Macbook and i have so many questions and no one to answer , so i guess you guys can help me!? Ok I think i want something like MacBook 13" 2.4 4GB RAM 320GB HDD But i was thinking about buying it on EBAY cause i have to pay NO TAX! , But the thing is, i cant find one like that, most of the macbooks on ebay are "stock" ( < !? you know the basic model should i say?)... So i was thinking about ME! changing the HDD and RAM (it looks fairly easy even for someone that haves never work with a computer before, and i have done it before) BUT!, which RAM am i supposed to buy? and Were!? the Same goes for the HDD! Also, On Apple website, the APPLECARE cost 250 and everyone on ebay sell it for 135-150. Why!? and how is that possible?? Somebody here have bought it?? Can somebody here help me!!?? THANKS IN ADVANCE CARLOS BTW: I've never own a MAC! Im tired of stupid Windows!, every PC or laptop i own just lags as hell, it freeze and i dont know, if its me!?, but this makes me mad, i cant even have pictures or my Music (like 30GB) on my Laptop , and it have Good specs for like 2 years ago, its not that old , i've formated it like 5 times cause it reach the point were it becomes useless even for just web browsing, and well I desided to give a try to mac!? Or should i just buy another (up to date) Windows Laptop!?!?