The ImageModMod can be unzipped anywhere and referenced via Path.txt, but mods are typically installed to the SE4 folder. (I like to place them all in a Mods subfolder just to avoid cluttering up the SE4 folder though.)
Note that the ImageModMod does not contain any actual images; it merely alters the stock game so that many components and such are replaced with new ones from the ImageMod, which comprises 5 separate archive files. Each of the 5 files in the ImageMod proper should be extracted to its corresponding folder under the Pictures directory, e.g. the Combat Pack goes in SE4\Pictures\Combat.
Hmmm... Maybe someone should make an installer for the ImageMod... tell it where your SE4 game is installed and off to go!
