I haven't followed development of Civilization 4. Is it now possible to play it on Mac OS X, without the DVD in the drive, and in a window? I am always looking for strategy games that I can play in a windows while watching DVDs or doing other stuff, games that don't require me to search my flat for the DVD just to play a few turns. Alpha Centauri still does that for me. I wonder if Civ 4 finally can?