Free Port Forwarding Guides & PFConfig: Forward Your Ports Automatically
Finding the MAC address of a Windows XP computer
Step 1:
Open up the start menu, and click Run. You should now see the following window.
Step 2:
Type command in the Open: box, and click Okay. The will bring up a black command prompt window.
Step 4:
The command prompt may look different on your screen, but it doesn't really matter. Type ipconfig /all in that window, and
then press the enter key. This will dISPlay a lot of information. If it scrolls off the top you may need to enlarge the window.
Step 4:
Look for the Physical Address in this window. That is the MAC address of this computer.