SSL Installation Diagnostics – Check SSL Certificate
http://www.digicert.com/help/index.htm

DigiCertUtil.exe makes it easy to:
•See all the SSL certificates installed on your server.
•Easily view details for each certificate.
•Fix intermediate certificate problems with one click.
•Import and Export your certificates to make a backup or move them between servers.
•Test a certificate to verify its private key is functional.
•Create certificate signing requests (very useful on ISA servers)
•Install a certificate to a pending request.
•Repair a certificate whose private key exists on the server but is not correctly associated with the certificate.

SSL Certificate Management & Troubleshooting Tool
https://www.digicert.com/util/