This Knowledgebase article provides information about how to export and import SSL Certificates when using Microsoft IIS Server V6.0.
From version 2007-03-11 onwards of the AM(X) SSL Certificates (not including chained SSL Certificates) are protected.
Note: Use the procedures below from Microsoft for both unchained and chained SSL Certificates with Neverfail for IIS versions prior to Neverfail for IIS 2007-03-11 and only for chained SSL Certificates with Neverfail for IIS 2007-03-11 and onward.
For more information about how to export and import SSL Certificates, please see the following information from Microsoft.
HOW TO: Install Imported Certificates on a Web Server in Windows Server 2003
Export a Server Certificate (IIS 6.0)
Neverfail for IIS 2007-03-11 onwards