For Mac Users:
To make sure that your computer can access SSL sites on the internet you will need to install these 2 certificates into your keychain. You click on each link to download then click or double click to install them.
Here is a video showing you how to install them on Mac computers:
For Windows and Mac users using Firefox browser:
Here is a video showing how to install the CA01-chain on firefox
Adding certificates to Firefox Browser
Here are the certificate files: