Information Week has an article on BI from the big guys, Oracle, SAP and Microsoft. Microsoft’s BI and pricing strategy are pretty well explained and get a solid review. This is more of a macro article not specifically focused on GP but all the elements in here are being applied with respect to Performance Point, Excel and GP.
Information Week and Microsoft BI
Archived post from 2008. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.