I am planning on buying a MacBook Pro 15" 2.16. Thinking I should add 1 GB of RAM to bring it up to 2. If I buy it on MacMall or MacCOnnection(which I would like to do to save the tax and use the rebate), they can do so. But will that affect any warranty with Apple? I was planning on getting Apple Care, either at purchase or within the 90 days.