Windows Vista

1. Click on the Start menu.
2. Type cmd where it says Start Search in the lower left and press Enter
3. Type getmac /v in the black window that appears.
4. Look for Local Area Conn, then Physical Address in the text that is returned.

Windows XP

1. Select Start -> Programs ->Accessories ->Command Prompt
2. The Command Prompt dialog box will appear
3. Type ipconfig /all at the prompt
4. Your network settings will be displayed
5. Scroll to the section that says "Ethernet adapter Local Area Connection"
6. Your computer's network adapter address is given as "Physical Address." This will be a combination of letters and numbers, twelve characters total.
7. The physical address is what you'll need to write on your connection request form.

Macintosh OS 10.5

1. Click on Apple Menu - System Preferences
2. Click on the Network icon.
3. Select Built-in Ethernet on the left side of the window.
4. Click the Advanced button on the right side of the window.
5. On the Built-in Ethernet Settings screen, click on the Ethernet tab.
6. Your computer's Ethernet Address is given as the Ethernet ID

Macintosh OS 10.3 & 10.4

1. Click on Apple Menu - System Preferences
2. Click on the Network icon.
3. Ethernet:
   1. Under the Show Menu, chose Built-In Ethernet
   2. Click on the Ethernet tab
   3. Your computer's Ethernet Address is given as the Ethernet ID