What is it?

i dont know really what is it(i think of what is it but just a bit :\ )
and i dont know how to install it can somebody help me?

DmMod is a Wc3 > D&D conversion, where one player acts as the dungeon master, and the rest are characters. it was made for RoC a while ago, I wouldnt suggest playing it, cuz not many people still play it