Hi! I have a 2007 Macbook A1181 and I want to upgrade its hard drive. Apple's upgrade options are way too expensive, that's why I came here to get your opinion (if you guys don't mind ). To cut things short, can I buy any kind of 2.5" Internal Hard drive (Not SSD)? How do I know if it will fit in my macbook or not? Thank you and I appreciate each your replies.