Simply select the amount you'd like to pay, up to $100, click add to cart and proceed through the checkout (ie. $34 and 34 quanity). If you need to pay more than $100, you can add multiple payments to get the desired payment amount. When you checkout, please write your account number and any other relevant notes in the Shipping Notes screen so we can apply it to your account. If you do not know you account number please call (704-525-5073) or email before making a payment. Any payments without an account number may not be posted correctly.