I have a new (Oct 2010) 13.3" Macbook Air. I have a legitimate paid-for copy of Windows XP and a legitimate paid-for copy of Windows 7 Upgrade. To install these on my new MBA with BootCamp, I must first install XP and activate it's product key, then do the same with Windows 7 Upgrade. The problem is that the new MBA won't run XP. So, it seems my only alternative is to lose what I paid for XP and Upgrade and then spend another $175 for a non-upgrade copy of Windows 7. Does anyone have an alternative?