How can I find out the MAC address of my PC? I have Win XP operating system and need help finding the MAC address of my PC.

In widows, click 'start' and select 'run' from the menu. Enter 'cmd' in the box. You should see a black window pop up with some text followed by ' > '. Enter 'ipconfig /all' after the > prompt. You should see your ip configuration listed. Your MAC address will be listed as 'Physical Address'. If you have more than 1 NIC you will see a MAC address for each card.