Instructions
Insert the "Sims 3" installation disc into your computer. A dialog box appears after the computer recognizes the inserted disc, prompting you for your next action.
Click "Run." Wait as another dialog box appears.
Click "Next," leading you to the end-user license agreement.
Read through the end-user license agreement. Click "Agree" if you agree to all of the terms listed inside this document.
Type in your serial number. This is on the back cover of your instructional manual, located inside of your "Sims 3" game case. Click "Next" twice, followed by "Install." Wait for installation to complete, which includes installing your game launcher.