Add a Root Certificate
On this page of the Windows® Internet Explorer® Customization Wizard 8, you can add a root certificate to your customized Internet Explorer 8 package.
The Internet sign-up option is not available for the Windows Vista® operating system.
New Root Certificate path
Type the location of the certificate. Root certificates provide a level of trust that certificates that are lower in the hierarchy can inherit. Each certificate is inspected for a parent certificate until the search reaches the root certificate.