You will have to use the cdkey with Game DVD or game files.We dont provide game files for this game.
You can even contact EA live chat and tell them to activate the cdkey in your origin account.You will ave to say that you purchased a retail box of the game and would like to activate the game in your origin account 

Why buy a Battlefield 2 EA Downloader Key?

* There are no long shipping turnaround involved, buy your Key and begin playing in less than 24 hours!
* A Battlefield 2 EA Downloader Key is far cheaper than the boxed version sold at retail stores.
* All our CD-Keys are 100% genuine and you will have no problems playing online. Also with EA Downloader Keys, they may only be used once per account so you know your the only one sold this key!
* Your CD-Key will be emailed to you after payment has been made within 24 hours.
* We provide pre and post sales support through email correspondence, live chat and through MSN Messenger, click on "Contact Us" for more information.
* 10% of all profit revenue earned through the sale of CD-Keys will be donated to a local non-profit organization.

Battlefield 2 Game Features:

* The award-winning Battlefield franchise invades the high tech frontlines of modern warfare in the new sequel, Battlefield 2™. The game brings the intensity and excitement of Battlefield 1942™ into the modern era with enhanced team play and the latest, most technologically advanced vehicles and weapons systems available to man.
* In Battlefield 2, players will choose to fight for one of three military superpowers: the United States, the Chinese, or the newly formed Middle East Coalition. Armed with the latest modern weaponry, players can take control of any of the game’s 30+ vehicles to engage in major conflicts with over 64 players in some of the largest online battles on the PC. Additionally, persistent character growth allows players to rise through the ranks and attain the ultimate rank of General.