I am using macbook air. In future itmake me happy by buying a mac or macbook or macbook air. I ask you some questions. Is it possible to change, increase Ram after buying the mac (from a 1gig 2gig) For I fear for the future of not having enough with 1gig and as my budget is limited right now. It is also possible to do this with the hard drive. Whether the Ram or could I order it. Thank you very much for your response.