SMAC MAC Address Changer is a Windows utility that lets you modify the MAC address, also providing a bunch of other tools to lend you a hand in this regard.
Although it's not quite the kind of job addressed to beginners, you shouldn't get yourself in trouble when using SMAC MAC Address Changer. The interface is pretty intuitive, while the application also comes with a detailed user guide to explain every single feature within the program.
Besides the fact that it shows the current MAC address along with the network adapter and the IP address, the main window lets you write down the new spoofed MAC address and perform a few other actions, including an adapter reboot.
In addition, you can always let SMAC MAC Address Changer generate a random MAC or you may simply choose from a predefined MAC list the one you want.
The bottom of the main window is addressed to more information, so you're able to see the spoofed and the active MAC address, along with network connection and hardware ID.
Last but not least, SMAC MAC Address Changer lets you view the IP configuration, but also access the MAC address log and see all the changes that occurred over time.
SMAC MAC Address Changer works on all Windows versions in the market, but keep in mind that Windows 7 users need administrator privileges in order to change the MAC.
As a conclusion, this is one of the most effective ways to change a MAC address, and since it all takes just a few seconds, it's clearly a top product.