How to Export and Import DHCP Settings from one Server to Another

On the existing DHCP Server, open a command prompt and enter the following command:

netsh dhcp server export C:\dhcp.txt all

Copy the file to the new DHCP Server and then open a command prompt and enter the following command:

netsh dhcp server import c:\dhcp.txt all

This works with Windows Server 2003 and 2008.

Reference: http://technet.microsoft.com/en-us/library/cc772372(WS.10).aspx