Dear Orville,

You will need to be logged on to the site and add the credentials to your user account via the steps under Set up CAC Login on this page https://globalnetplatform.org/user/cac?destination=user/password

Once set up, you will follow the Log in with CAC instructions. 

If you are having a specific issue, please login and access this ticket and provide some additional detail so that we may help you futher. 

Cheers,

Lisa