You can get it from http://edelivery.oracle.com/
You can get it under
E-Businees Suite (Windows Platform) --> Oracle E-Business Suite Applications Release 12.0 Media Pack for Microsoft Windows --> Oracle Governance, Risk and Compliance Manager 7.7.1
The document is bundled with the software. You can find User Guide/ Installation Guide
In the download mentioned in the threads, the release notes are also included.
GRC Manager works on Stellent repository? You should also check out the link: