I upgraded my 2010 iMac to Lion and iWork 09 (from a disc) works great on it. I just bought a MBA and I would like to put iWork on it. Do I need to purchase the new iWork from the App Store or is there some way to put iWork 09 on it? Note: I tried moving iWork from iMac to MBA with a USB and it said check to see if this version of iWork is compatible with OSX Lion. (it is working on my iMac with Lion) maybe because I installed it on the iMac before upgrading to Lion.