Installing a Save File that comes with a New World

A save file is created by world builders instead of pre-populating the world with mods. Basically, the completed world is exported from Caw, unpopulated, and a .sims3pack is created. This is what you install into your game using the launcher. The world builder then plays the game in the new world as normal, adding sims, and pets. once the new game is saved, there is a saved game file created, and this is the file distributed with the world. Every world you play creates this file in your documents folder, along with a back up. You can see from the pic the worlds I have a save for on my pc.
Now you just need to take that save file, and just drag and drop it into your "Saves" folder.

This is where that file goes;