I have a 2 year old macbook pro with an 80 gb hard drive - I am currently covered by a 3 year Apple care plan. Will replacing the Hard drive Void this plan or warrenty? Is it worth doing or should I simply buy something like this http://www.maplin.co.uk/Module.aspx?ModuleNo=224073&source=1&DOY=13m6 and replace external drive in a years time. I Will be using the extended space to edit High def in Final Cut? Cheers Also can people give me an idea of what it will take nd what are the risks (I know it takes opening up the thing) seeing as i've never done anything like this before.