I have Got It !!!!

Dear Valued Customer,

Thank you for ordering God of War III from GameStop. To redeem your God of War  III E3 2009 Demo, please follow the instructions below.

[LIST] Step 1: Open an account on the PlayStation Network (or use an existing account).
Step 2: From the PlayStation Network icon on the Xross Media Bar, select ‘Account Management.’
Step 3: Select ‘Redeem Codes.’
Step 4: Enter Promotion Code. Please note that the Promotion Code is case sensitive and must be entered exactly as displayed. 
[/LIST]
 Your unique pre-order promotion code is xxxxxxxxxxxxxx

Once the Promotion Code has been entered correctly, click ‘Continue.’ Once you accept the terms, you will be taken to the download screen.

For assistance with downloading the demo, go to www.us.playstation.com/support or contact SCE Consumer Services at 1-800-345-7669.

Thank you,
GameStop Customer Service