Cracked my macbook screen today, nearly cried when I saw it upon opening brought it into a few mac repair people today and got quotes all around 300euro. Can't afford to fork that kind of money out at the moment. I'm gonna give it a go myself and bbuy from ebay. It's a 13" white macbook bought in 2007.. How do I know which screen to buy? ps I did a search for this and couldn't find exactly what I wanted, plus I wanted to make sure for myself.