There is an option to change the MAC address on some network cards under the Advanced tab in the network adapter's Properties menu.
On the Intel site there is this disclaimer:
The Media Access Control (MAC) address is hard-coded on Intel® wireless adapters and cannot be changed.
Some third-party software applications can "spoof" a MAC address to a different address, but for security reasons, Intel does not support this practice.
Beginning with 12.x wireless driver package, the possibility of "spoofing" the MAC address was blocked to prevent this practice.
Some adapters/drivers allow you to change only the first octet from the built in value 00 to 02, 06, 0A or 0E.