The "DNS Server GlobalNames Zone Deployment" white paper at http://download.microsoft.com/download/a/5/7/a575d225-e82e-4361-a830-9fc94ab2d099/DNS-GlobalNames-Zone-Deployment.doc describes how to implement the DNS GlobalNames Zone on Windows Server 2008 (formerly Windows Server "Longhorn"). 

This new feature provides single-label name resolution for large enterprise networks that do not deploy Windows Internet Name Service (WINS) and where using DNS name suffixes to provide single-label name resolution is not practical.