Call of Duty Black Ops Rezurrection DLC pc

How to make dlc work.
requirement:
A legit copy of black ops.
Smartsteam or darksteam .
How to install:
1 put the file called "call of duty black ops rezurrection dlc.ncf" in your steamapps directory.
2 overwrite the other files in the steamapps/Common folder.
3 Now open smartsteam and login with your steam account (where you have buy black ops).
Now you can play new map in singleplayer or online(you can play online only if you are the host of the game or in private with your friend).