i got a beta code

someone just gave me a code how do i work this thing. . .?

* Go to the PLAYSTATION® Network Icon on the PLAYSTATION®3 XMB™ (XrossMediaBar).
* Select “Account Management.”
* Select “Transaction Management.”
* Choose “Redeem PLAYSTATION® Network Card or Promotion Code.”
* Enter the SOCOM: Confrontation Public Beta code which you received
* Click “Continue.”
* The download will be available on the next screen.

thanks man