ADMT v3 Released to Web!
Active Directory Migration Toolkit (ADMT) is the strategic offering from Microsoft that assists you in solving technical and business problems pertaining to restructuring of your Active Directory environments, as well as transitioning from NT4.0 to Active Directory. ADMTv3 enhances the rich feature set of v2 with a new backend database, support for simultaneous migration tasks, multiple ADMT consoles with delegation, agent enhancements, full object rename, and a host of other improvements.
Active Directory Migration Tool v3
http://www.microsoft.com/downloads/details.aspx?FamilyId=6F86937B-533A-466D-A8E8-AFF85AD3D212&displaylang=en
The Designing and Deploying Directory Services Documentation
http://www.microsoft.com/downloads/details.aspx?familyid=6cde6ee7-5df1-4394-92ed-2147c3a9ebbe&displaylang=en