i decided to just keep my late 2007 model macbook. its this one for further reference and help with this...http://support.apple.com/kb/sp12 any how, i am wanting to upgrade everything that i Can. I dont have enough money to just go buy one, and i have an older one that works fine, just a bit slow. so basicaally im asking for any help on this. so far i know i can replace the hard drive, the ram, and the video and audio cards. but idk which ones are the best or where the best to look. i want the biggest hard drive you can buy for it, idk how many i can put in the computer, but i know i have 2 ram cards, so could i get 2 4GB ram cards and use both? or would i mess something up? im sorry, i justt really want to do this, but i want to do it right. thank you for any help. i want this thing to run as fast as possible. and i have a person who can do all the work.