Over at Dynamics GP Insights Nathan Hayden covers Microsoft Dynamics GP 2010 64-Bit Operating System Considerations
Microsoft Dynamics GP 2010 64-Bit Operating System Considerations | Dynamics GP Insights
Off-Topic & MiscellaneousGP 2010
Archived post from 2011. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.