Well, I picked up the second level MacBook Air 11 inch computer a couple of weeks ago with an i5 processor and 4GB of ram. Today I installed my copy of Call of Duty 4, Modern Warfare. And to my surprise it worked without a hitch. The computer did get a tad warm but nothing too bad and of course, you do have to have the disk in the external drive. The thing I was worried about was the integrated video. Worked out better than I'd expected.
Pete