1. Go to Tracfone web site [tracfone.com]
2. Select "Buy Airtime Online"
3. Pick 200 minute air time card
4. Enter promotion code 77578 and your phone number
5. Hit "Continue" and it will take you though the payment process.
6. Once the payment goes through, you will see the bonus minutes added to your phone.
Sorry, not sure what the expiration date is either!