Requires The Sims 3 on Origin in order to use.
Release date: 06/03/2010

Widen your Sim’s horizons with a bunch of terrific new career opportunities. With Sims 3: Ambitions, you will decide if your Sim will be the town hero or cause mischief among its neighbors.
Will your Sim be a brave firefighter, a prominent architect who will completely transform the city, or a marginal tattoo artist? Will your Sim be a billionaire inventor specialized in high-tech or, on the contrary, will he be a mad and clumsy scientist, barely able to live his life?
Its future only depends on your calls!

Features
For the first time ever, you control your Sim’s actions and interactions while they’re on the job.
Be a hero or mess with the neighbors as a firefighter, private investigator, doctor, ghost hunter, and more.
Choose how your Sim’s career progresses – will they work for good or evil, pursue creative endeavors, rise to success as a mogul, or shirk responsibility as a slacker?
Your Sim’s on-the-job choices now change their town and affect other Sims as well. Modify the town’s structure as an architect or set neighborhood fashions as a stylist.
Enjoy all-new skills and activities. Master the arts of inventing, sculpting, and tattooing, and use your skills to earn Simoleons.

ACTIVATION

Go to: http://www.origin.com/us/about.
Click "Download Origin" (from the upper left corner)
Install and start application, login with your Account name and Password (create one here: http://store.origin.com/ if you don't have it).
From the "Origin" drop-down menu (upper left corner) choose "Redeem Product Code...", enter your code and click "Next".
After successful code verification go to the "MY GAMES" tab and start downloading.