Follow SSL Cerficate request signup procedure from home page
Generate CSR according to your secure server instruction
Once an order is submited, it will take up to 24 business hours to process payment and once payment is confirmed, an email from GeoTrust will be sent to you with an web link to approve the registration.
Once approved, Certificate will be processed and email to the client (usually within 10 minutes after approval). You will then be able to install the certificate into the secure server accordingly