Hey everyone, I just got an Aluminum Macbook w/ 2gb RAM and I want to upgrade it to 4 or possibly 6 (I believe this is where it's maxed out).. I'd like to know where do I get this done at? I know a lot of people do it themselves, but to be honest I want no part in opening up my machine and risk messing something up.. will the Apple store do it even if I don't have a receipt or anything (bought it used)? Or do small time computer service stores normally do this? Just looking for some help/advice from the experts.. thanks