|Each network connection device has it's own unique mac address. It is a common practice with routers to have the ability to spoof or clone the mac address of a connected PC.This is so the ISP can be made to recognize a new router as a legitimate connection after the original account was set up using different hardware. I do not know whether it is possible to alter the mac address of an individual network adapter. And your ethernet NIC and wireless NIC will each have their own unique mac address.|
If the router you connect to has mac filtering then you may need to enter the mac address for your new wireless NIC in the "permitted" list in the router's configuration settings.
Goin' Fishin' (Some day)