Using Technitium MAC Address Changer (software) will only spoof MACs starting with 02; it was for this reason that I started looking for...
Aw...well, the first post in this thread lists "Implemented Adapter Network Address substitution (for MAC address spoofing under Windows :) )"...
Thanks for this great contribution! I'm having difficulty getting MAC spoofing to work; hoping I'm just missing something simple, but regardless...