How do you enter game code nfs prostreet ea.onlineregister.com?

To enter the game code for Need for Speed ProStreet at ea.onlineregister.com, visit the website and log in or create an EA account if you don't have one. Once logged in, look for the option to redeem a code, typically found in the account settings or game registration section. Enter your game code in the provided field and follow the prompts to complete the registration process. After successful entry, you should receive confirmation of your code's activation.