How to change mac adress with adsl line

[mmoproz]

i'am using a vpn server with dynamic ip, but i read somewhere blizzard can trace you with your mac adress.

But i don't know how to change my mac adress because i'am using an adsl router
have seen video's and tutorials how to do it with a cable modem, but not with adsl modem(router).

Btw my modem already gives my everytime i unplug it a new ip, even though i use a vpn server.

Maybe i'am a bit paranoid.

But if anyone knows how to change the mac adress of a adsl router let me know.