How to automatically obtain an IP address
Use these steps to configure the computer to obtain an IP address from a DHCP server. Note that you must have a DHCP server.
1. Click Obtain an IP address automatically.
2. Click Obtain DNS server address automatically if you do not want to specify the IP address of the Domain Name System (DNS) server.
3. Click OK. In the Local Area Connection Properties dialog box, click OK.
4. Click Start, and then click Run.
5. In the Open box, type cmd, and then click OK.
6. At the command prompt, type ipconfig /release, and then press ENTER.
7. Type ipconfig /renew, and then press ENTER. The network adapter is assigned an IP address by the DHCP server, and a message similar to the following message appears:
Windows 2000 IP Configuration
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :dns.microsoft.com
IP Address. . . . . . . . . . . . :192.168.0.201
Subnet Mask . . . . . . . . . . . :255.255.255.0
Default Gateway . . . . . . . . . :192.168.0.1
8. Type exit and then press ENTER to quit the command prompt.
(From
http://support.microsoft.com/kb/308199)
Normally you can start straight from step 4.