If you are using DHCP on your network and you want to prevent rogue clients from obtaining IP addresses from your DHCP server and participating on your network, your options are simple.
There's an important difference in how DHCP works on a W2K3 DHCP server as compared to a Small Business Server 2003 (SBS2K3) box.
Have trouble running the netsh dhcp command to configure your DHCP servers?
Do you install and configure Active Directory Connector (ADC) before or after the user migration? The answer to this “complicated” question is either you can install and configure ADC and Connection Agreements (CAs) before or after the user migration. Here are my explanations for both scenarios.
There's an important difference in how W2K and W2K3 store DHCP information.