Installing 3rd party certificate for ADSelfService Plus

Installing 3rd party certificate for ADSelfService Plus

I have obtained an SSL certificate through GeoTrust which I need to use with ADSelfService plus.  I see there are instructions for installing GoDaddy, Comodo and Verisign certs but nothing for GeoTrust.  GeoTrust provides its certificates in a p7s file format which supposedly includes all intermediate CA certificates so that I shouldn't have to install the intermediate CAs separately.  Can someone please provide me instructions on installing the GeoTrust certificate?

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