Getting ACE (Advanced Combat Environment) mod up and running was not the most straight-forward of things. Really should have been, but isn't. Here's a quick guide:
That should be it. Let me know if you're having trouble.
- Download and install the latest Six Updater for ArmA
- Click on the "Six Updater - GUI" icon on your desktop
- A command prompt will pop-up, do some stuff (leave it alone) and then open a web browser (you may need to refresh the browser as sometimes it isn't quite ready when it starts up)
- In the web browser, click on "Main" in the top navigation
- Ensure that "Please select a preset config" is set to "A.C.E. mod (Vanilla)"
- Ensure that "Action" is set to "Install or Update, and Startgame"
- Click "Execute"
- ACE will now automatically update itself, progress shown in a new command prompt window
- When (eventually) prompted, press "Enter" in the command prompt and ArmA2 will start automatically with ACE loaded
That should be it. Let me know if you're having trouble.