I do not have a PS3 and do not know what this is, if you do - please enjoy

Congratulations! You won IN-GAME CASH REWARD while playing Uncharted 3: Grab the Ring! Your promotion code is D4GT-QDNP-TRT8. Remember, this is a unique code and can only be redeemed ONCE. To redeem the code on your PS3™ system, follow the instructions below.
Step 1 Create account on PlayStation®Network (or use 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.

Once the Promotion Code has been entered correctly, click "Continue." After accepting terms, the download screen will appear. Promotion Codes expire 12/31/2011.