You should have received an email letting you know that you have received a Gift Certificate. You can click on the link and it will take you to gift certificate page. OR You can go to your Account Page under the Gift Certs link and see your gift certificate code.
To use a Gift Certificate copy and paste the Gift Certificate code in the Gift Certificate field of the checkout page and hit the Apply button. If your purchase amount exceeds the Gift Certificate amount you can pay the remaining balance with any of our supported payment methods. (Credit Card, Paypal, Check or Money Order) .
If your purchase amount is less than the Gift Certificate amount the remaining balance will be calculated and will be available for future purchases. Gift certificates are currently good for two years.