How do you activate maps you have downloaded for Star Wars Battlefront 2

You need to make sure you have downloaded the latest patch for Star Wars: Battlefront II otherwise it will not recognise the maps.
Next, create a folder called "addon" (without quotations). Then, simply dump the folder containing the map (the map's readme usually tells you which folder exactly) True Answer Go into My computer/local disk/Program Files/Lucasarts/Star Wars Battlefront 2/GameData and then create a new folder and name it addon then put all of the stuff you want to put in there (this might only work for maps).