Hi, I moved from PC to MAC because I'm fed with Windows..... Now, I'm going to use mac for the first time soon. I just got the MacBook for $100 because some guy said it's broken and took all the parts off. So, I fixed all the parts together and needed the new logic board (Which I'm getting next month). Few question to ask: 1) When you open the MacBook, you'll noticed the frame thing on the left side (the one with claws), What are they called? because I see it's damaged and needs to repair. 2) I don't know what version I have. Here's the seriel number W873015UYA8. 3) Which MacBook mag safe adapter should I get? I seen many have different numbers like 60 or 80. And last: 4) Where is the best placer to get RAMs and Harddrive for good price? Thanks for your help!