Easy - just run down to the local software copy shop (you know, where you also get your knock-off Rolexes, switchblades, and DVDs), pick up that pirated copy of Windows, and re-install a clean version of the OS. “Green Dam” gone...
Actually, it's even more painless than that. For a few bucks, a tech at the local computer mall will wipe the hard drive and re-install Windows for you. Besides, there are literally tens of thousands of mom-and-pop PC operations. I suspect this regulation is only an issue for the big boys like Lenovo, Dell, HP and IBM. Who the heck is going to police Ah Qiang's PC outlet?