If you selected a credit card, enter the required information. The credit card payment information and billing address are not saved to the SIMnet database. This information is only used to process your SIMnet payment. It is not visible to your instructor. Enter your information, and then click the Buy button to complete the purchase process. Be patient. The system may take a few minutes to process your payment. Do not click the Pay button more than once, or your credit card may be charged multiple times.