Set IP Address from Command Prompt

Netsh ulility is available in Windows Server 2000, Windows XP Professional & Windows 2003 Server to configure IP properties of a Network Interface Card (NIC).

Set Static IP
netsh interface ip set address local static IP_address subnet_mask gateway metric_of_gateway

You will find the interface name from Start - Control Panel - Network Connections.

Set NIC DNS setings
netsh interface ip set dns local static IP_address primary

Configure NIC to get IP settings from DHCP Server
netsh interface ip set address local source=dhcp
netsh interface ip set dns local source=dhcp