Microsoft has published a guide about migrating from Windows NT Server 4.0 to Windows Server 2003

Organizations that include less than 1000 network devices and that are heavily invested in servers running Microsoft Windows NT 4.0 can take advantage of the speed, security, and functionality of the Microsoft Windows Server 2003 operating system by migrating their servers to Windows Server 2003. These clear, concise migration guidelines, targeted to smaller organizations, can significantly reduce the complexity of the server migration.

This guide is intended primarily for IT administrators who are responsible for network operations in a smaller organization. Each chapter in this guide provides a simplified migration path as well as step-by-step instructions for a single server migration. The server roles included are: domain controller, DHCP/WINS server, file/print server, remote access server, and Web server.

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