Mariano has a information on Granting Microsoft Dynamics GP user minimal access at the database level to setup additional users. In essence Mariano provides a script that assigns the minimum permission necessary to setup users in GP. This is a solution to not using “sa” to setup users and not using the alternative of assigning a user to the Sysadmin role in SQL.
Also, as I mentioned early, if you buy Config AD or Audit Trails before 12/31/10 you can get a 20% discount and a free copy of the Microsoft Dynamics GP 2010 Cookbook. Contact Jill at Jill@gofastpath.com for all of the details.