I am thinking of exchanging the defective MacBook for the MacBook Air. I have some basic questions about the MacBook Air: 1) Can I plug in the MacBook Air for recharging the battery and using the power from the electricity outlet while at home? 2) Does it come with a eternet port and a cd/dvd drive? 3) Will the new MacBook Air have any issues from the first generation MacBook Air? 4) Can the MacBook Air use wired internet or just wireless internet? 5) Are there any build quality issues with the new MacBook Air? In comparison, are they're qualities better then the MacBook/MacBook Pro? Also, please post your user experiences with the new MacBook Air if you can please, thank you.