If you already requested certificates on one way or another, and/or you are a confident person, just:
1. Go to http://www.digicert.com/sso;
2. Choose your institution, and login;
3. Request a Grid Premium certificate;
4. You can now export the certificate from your browser if needed.
Choose your institution, e.g., by typing 'VUB' or 'Vrije Universiteit Brussel'Press the button Start single sign-onLogin with your institution credentials. This page will look different for different institutions.Choose a Premium Grid certificate, and press the button Request certificate.If you see this, your request succeeded. Note that your certificate is already installed in your browser !If you go back to http://www.digicert.com/sso, you'll see an overview of your certificates. In case of a security problem (e.g. stolen laptop), you can also revoke the certificate here.