Had this game on CD when it only ran on XP. When I went to Win7 the game wouldn't run......so, imagine how happy I was to see this GREAT simulator on GOG.com and at bargain basement prices. Guess you could say I am "shell shocked" to have this again. Love being able to switch on those big P&W radials and the feel of really piloting this beast. Enjoy riding the ball and tail too. Also you get a whole new perspective and respect for the German pilots facing the ferocious firepower of all those .50 cals shooting at you on attacking. Go for it.