No extra effort is required to install the ImageMod to work with mods. If a mod's data files specify an image that is not present in the mod's folder, the game will look for that image in the stock pictures folder.
The ImageMod is not needed at all for TDM, as TDM only alters the startup screen (included with the mod) and AI files.
You could combine the Image Mod Mod with TDM. Copy its data files into the TDM folder, EXCEPT for formations.txt. You want to keep the TDM formations.txt file.
ALWAYS - back up your DATA files prior to doing anything with them. Or else you will be looking at a re-install.
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Creator of the Star Trek Mod - AST Mod - 78 Ship Sets - Conquest Mod - Atrocities Star Wars Mod - Galaxy Reborn Mod - and Subterfuge Mod.