...uhm? Do you mean that you are trying to install SkyUI, but cannot figure out if you're skyrim is using SKSE? When starting the game make sure you are starting with the skse loader and not the default skyrim launcher. I highly recommend using NMM (Nexus Mod Manager) as your life will be much easier. No not SkyUI, the actual skse im not sure if they have compacted it into one file or if it isnt dowloading right. but there isnt a an exe or dll only 1_04_03.7z. unpackable.