Just put the .esp file in your data folder.
Actually... Why are you even reading this? 
I thought everyone uses Mod Managers these days lol

---------------------------------------------------------------------------
Data folder can be found at:
\Steam\SteamApps\common\Skyrim

Look inside your Program Files (Progarm Files (x86) for x64 users) if 
it's not found at C:\  
---------------------------------------------------------------------------

Have fun!

- A18718 / DarkShadowBlade