http://www.dreamcarchallenge.com/main/Default.aspx -click enter challenge, then click next step until you get to the form. Fill out the form, and make sure you check the box that says “Yes, I would like to receive Microsoft Points by participating in this promotion. Tell me more about Microsoft Points”, then submit and they will email you the code. You can redeem the code here: http://points.microsoft.com -this was posted before, but it stopped working.  -You can get up to 2000 pts during the promotion by going back to the MSN Auto site each day and creating a car and voting for cars.