Learn how to install wallpapers for Sims 1 with this tutorial.

The Tutorial
  1. Step One: Save the File to Your Desktop
    Click on the download link or button and save the file to your  hard drive.
  2. Step Two: Extract File if in Archive Format
    Most custom content will come in archive format (.rar, .zip). If the file you downloaded is archived, extract it. (In Windows, you do this by right clicking and choosing “Extract Here” or “Extract to \”.
  3. Step Three: Locate .wll File
    If you extract a file, it may have multiple files inside. The only one you should care about is the .wll file.
  4. Step Three: Navigate to the Program Files\Maxis\The Sims\GameData Folder
    Browse to The Sims folder on your system, then the Game Data folder.
  5. Step Four: Place the .wll File Inside “Walls” Folder
    Inside Game Data, you will see a folder labeled “Walls.” Place the .wll file inside.

Voila! That’s it! The next time you open your game, go to Build Modes and click on wallpapers. The new wallpapers you installed will now be part of the Build catalogue.