Step 1: Log in to the computer as an administrator.
Step 2: Click the “Start” button.
Step 3: Navigate to “Control Panel.”
Step 4: Select “Add or Remove Programs.”
Step 5: Choose “Add/Remove Windows Components.”
Step 6: In the Components list, locate “Networking Services” (do not check or uncheck the box), and then click “Details.”
Step 7: Select the “Domain Name System (DNS)” checkbox, and then click “OK.”
Step 8: Back on the Windows Components page, click “Next.”
Step 9: When prompted, insert the Windows 2003 Server CD, and then click “OK.”
Step 10: On the “Completing the Windows Components Wizard” page, click “Finish.”
Step 11: Finally, click “Close.”