How To Find Your IP Address and MAC Address In Mac OS X

Mac OS X (10.4) - Finding the IP address and MAC address

1. Go to the Apple Menu, then select System Preferences.
2. Click on "Network" in the System Preferences panel.
3. Under "Show:", select the network interface that you want the IP/MAC address for. ...
4. To find the IP address, click on the TCP/IP tab.
5. To find the MAC address of the Ethernet card, click on the Ethernet tab.