Download the certificate in Windows Internet Explorer, by clicking on "Add certificate". The Internet Explorer will ask you whether to "save" or "open" the certificate. Select "open" and click on "Install Certificate" in the following dialog. The certificate import assistant opens, confirm with "next". Click on "Save all certificates in the following store" and click on "Browse". Select the second entry "Trusted Root Certification Authorities" and confirm with "OK". In the Certificate Import Wizard, click "Next" and then click "Finish".
The eBlocker certificate has now been added in your Windows computer and the eBlocker Controlbar is now displayed on pages loaded with HTTPS.