SMAC is a powerful, yet easy to use MAC Address Changer (Spoofer) for Windows 7, VISTA,, 2008, 2003, XP, 2000 systems, regardless of whether the network card manufacturers allow this option or not (if supported by the network driver). SMAC is developed by Certified Professionals (CISSP, CISA, CIPP, CSSLP, ethical hackers and MCSE). It is also great for MAC Address Lookup.