There you go people:
1) Unzip the file
2) Go in your Diablo II directory
3) Make a backup copy of your current "Patch_DiabloII.mpq" or what else the file is called
4) Put the Dropmod's "Patch_DiabloII.mpq" in it
5) Start diablo 2
6) Create a new char
7) Kill some fallen
8) Make urself some enigmas & lw
Don't forget to read the ReadMe