1. Extract the zip files. 2. Move the extracted files and folders (including the Sims 3 Store) to: C:\Users\{your name}\My Documents\Electiontic Arts\The Sims 3\Downloads NOTE: If you are running Windows XP, replace "Users" with "Documents and Settings" 3. Open the Sims 3 launcher and click the Downloads button. 4. Click the Select All button and then Install.