Multiple NICs for ur Windows

If your PC does not have multiple NICs, you can use MS Loopback
adapters. (If you do have multiple nics, this part is not necessary.)

• Go to Start > Control Panel
• Click ‘Add Hardware’
• Click ‘Next’
• Select ‘Yes, I already have a connection’
• Select ‘Add a new hardware device’
• Select ‘Install from a list’
• Click ‘Network Adapters’
• Select Microsoft Loopback
• Click ‘Next’
• Click ‘Next’
• Click ‘Finish’
• Double-Click ‘Network Connections’
• Rename the loopback interface to something descriptive.

then run "ipconig /all" to check the new NIC's mac address

Ethernet adapter Local Connection 2:

        Connection-specific DNS Suffix  . :
        Description . . . . . . . . . . . : Microsoft Loopback Adapter
        Physical Address. . . . . . . . . : 02-00-4C-4F-4F-50
        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
        Autoconfiguration IP Address. . . : 169.254.25.129
        Subnet Mask . . . . . . . . . . . : 255.255.0.0
        Default Gateway . . . . . . . . . :