At End Point Corporation we used to run our own certification authority to generate signed SSL/TLS certificates for our own and our clients' use. We no longer do, but we are keeping the setup information here for historical reference.
We exercise great caution around our CA-signing infrastructure, and only a limited number of employees have access to it. We recommend those interacting with our sites import the CA certificate into their browsers so that they will not get in the habit of ignoring security warnings.
The instructions provided in the following links give a general guideline for importing a "Certification Authority" token into some popular browsers. The screenshots won't exactly match your screen and are only an example to help illustrate the steps involved.