If you have got an existing SSL certificate in a PFX file, then you can import it into the DualShield server to be used as a server or web SSL certificate.
In the Admin Console, select "Repository | Certificates | Server Certificates"
Click the "Import" button
Enter a description
Select the certificate PFX file to be imported
Enter the password of the PFX file
Click "Save"
Please note that this does not automatically update your web certificate. If you wish to do that then...
Click on the ellipses corresponding to the newly imported Server Certificate and select Apply
Select the correct SSO Server from the drop down...
Hit Apply
Click Yes.