|Open Control Panel -> Network and Internet -> Network and Sharing Center. Then click Local Network Connection. Here you have a button named Details... Click it and you will see Physical Address. That is your MAC address. Something like XX:XX:XX:XX:XX:XX|
Please note that each network adapter, whether wired or wireless, has a MAC address given to it and this MAC address is unique. If you connect Wirelessly, you will have a different MAC address.