If you have a PlayStation Network voucher code, follow these step-by-step instructions to use it at PlayStation Store on your PS3.
1. Go to Redeem Codes
2. Follow the on-screen instructions to enter the voucher code details
Once complete, select Continue.
3. Select Confirm
4. Select Download
Once complete, the item will be added to your Download List.
4. Access your content
Go to the relevant category on the XMB™ Menu to start playing your content.