Yeah, thanks mate, you did make my mind clearer now, but I'm not sure if I understood everything lol. So like for FAR, I've already download it and it came with a few folders and files. All of these files have the .cfg extension, but I don't know what to do with those. For installing it do I have to overwrite the Default Squad files inside my GameData, or do I just copy the FAR folder (with it's own Plugins and Textures folders and .cfg files) to my GameData and it's done? (oh, btw, my ModuleManager.2.5.1.dll was in the KSP_Data folder, not the GameData lol, I'll move it to GameData and try it out now). Oh, and I'll delete the ModuleManager that came inside FAR/GameData folder, it's the same version as the one I already have, so I don't think I'll need it. Btw, if I download new parts, like "B9 Aerospace", is there a way to make them to work with FAR by editing the .cfg files and putting values to them? I do have a few more questions about addons, but it doesn't come directly to this Subject, so I might just wait and try getting this to work first. Thanks for the help!