followup q, installing crt to trusted chain. which one?

Hi there;

This is a followup question,
https://www.experts-exchange.com/questions/28316394/how-to-install-SSL-certificates-in-IIS-7-5.html

I complete the import of certificate to IIS and made the binding to 443 properly but I have an issue. I have the error in certification path indicating that it is not signed (and issued) by trusted Root Certification Authority.  OS, I tihnk I am missing to add my crt file to intermediate certification authorities. Am i right in diagnosis?

If so, do you think the answer is this:
http://www.entrust.net/knowledge-base/technote.cfm?tn=8166

Regards.