SQL Server 2005 Service Pack 1 was release today. If you’ve delayed moving to SQL Server 2005 while waiting for the first service pack, time is up! You can get SP1 here.
SQL Server 2005 SP1 Available Now!
Install, Upgrade & AdminSQL & Data
Archived post from 2006. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.