How-To-Install CC/Mods "The New Way" Guide. Update: 04/23/2014

Right-click on it and tell it to open with Notepad.

EDIT:
Not being mean I just state things how I see them. Read it however you want.
However, you shouldn't be doing all that stuff in your game data files as the game uses that folder (you only get one) to start the game. It tries to read all the crap in there and you're making it work harder than it has to. You run the risk of corrupting all your saves, etc... Just telling you like it is.