No Internet with new router - MAC spoofing

Some Internet Service Providers (ISPs) permit just a specific number of PCs to associate with the Internet as a matter of course. They do this by "locking" the association with the interesting Media Access Control (MAC) address of your PC. Macintosh addresses are a novel number or identifier incorporated with modems, switches and other system equipment. To fix this, you should arrange the switch to claim to have a similar MAC address as the ISP "affirmed" PC, rather than its own.

http://www.mywifiext-net.com/