This game features controls and graphics that have been optimized specifically for PC users. The PC version will include many of the DLC items released on the console versions of the game. Players will have immediate access to additional aircrafts and numerous aircraft skins as well as skills and maps. The multiplayer portion of the game will feature support through Games for Windows Live from Microsoft.Go to: http://store.steampowered.com/ and download STEAM client
Click “Install Steam” (from the upper right corner)
Install and start application, login with your Account name and Password (create one if you don’t have).
Please follow these instructions to activate a new retail purchase on Steam:
Launch Steam and log into your Steam account.
Click the Games Menu.
Choose Activate a Product on Steam…
Follow the onscreen instructions to complete the process.
After successful code verification go to the “MY GAMES” tab and start downloading.