azurecurve follows up with How To Deploy Excel Reports In Microsoft Dynamics GP 2010 R2
How To Deploy Excel Reports In Microsoft Dynamics GP 2010 R2 | azurecurve
Reporting & BIExcel & OfficeTips & Hidden FeaturesGP 2010
Archived post from 2012. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.