I would request some help with getting mods to work with the steam version, currently they do not leaving me without all the nice mods that have been made for it.
Follow these steps:
Install the mod to the correct location. I will use the absolute corruption mod as an example. You will install it to this path (assuming its on C drive)
C:\Program Files\Steam\SteamApps\common\star wars empire at war\corruption\Mods
Once installed the ACM2.4 folder will be inside the mod folder, then do the following on steam:
Right click on Star Wars: Empire at War Gold (I assume you bought the gold). Click on set launch options. Type in "swfoc MODPATH=Mods\ACM2.4" without the quotations.
Now when you launch the game from steam and pick forces of corruption it will launch absolute corruption 2.4
You only get one launch path option so if you have a mod for the normal Empire at War and Forces or Corruption you will have to change the launch option each time you switch between the mods.
Hope this helps