First, you will need JSGME, for those of you that already have it, skip ahead. It is the easiest way to install mods for DCS World. I will be using JSGME to show you how to install this. I apologize in advance for oversimplifying this, I just want to cover all the bases possible for everyone from the 1000hr forum power user to the person who just got their account. I am here to try and clear all that up, maybe this will get a sticky so everybody can see how to get it working properly. I see many people getting very confused while trying to get SweetFX to work with DCS.
