HPS just released the direct download version of Modern Air Power: War Over the MidEast.
Information about purchasing the DD version of War Over the MidEast can be found here:
http://www.hpssims.com/shopping/shopdisplayproducts.asp?id=60&cat=MODERN+AIR+POWER (http://www.hpssims.com/shopping/shopdisplayproducts.asp?id=60&cat=MODERN+AIR+POWER)