Changing the MAC address of Asus F5V

Hello!
I would like to change the MAC address of my WiFi card (Atheros AR5006EG). I need this because my ISP uses those addresses to identify computers. As I always used an Ethernet card and now bought a WiFi router - I need to change the MAC of WiFi card to the same as the Ethernet card.
I tried to use configuration of Atheros card, editing registry and use TMAC - but nothing has worked for me.
Do you have any idea what can I do now?
Best regards!

you can't change a mac adress. it''s burned into rom (read only memory) on the network card. You can spoof it. Windows usually copies your mac to a location and then uses it.

it would be better to just call your isp and make them change the mac

If I'm reading this correctly you probably don't want to clone the MAC address of your ethernet card to your wireless card. The modem should be hooked up to the router now so you'll want the router to clone your MAC address. You'll have to look up the specifics on how to do that in the router's manual.

MAC addresses cannot be changed. They're a type of serial number unique to the device.

MAC's can be spoofed, but not easily changed, if at all.

Uh, if you are behind a router, how is your ISP getting your MAC address through NAT?

Firstly, thanks for all your answers!
Yes, of course it meant to be how to spoof a MAC.
Well, my router works now as an Access Point. So (now) there's no NAT.
I couldn't manage how to spoof it so I have to call my ISP on Monday.