If you do it manually that there are certain dos commands for it that i'm gonna discuss later. But for now you can use this software the Mach Adress Changer. It is actually made for windows Xp but it worked on my vista as well.
The software will change your Mac adress as desired by you. And your computer will be a complete stranger to the ISP server. So it might work in some cases but most of all you'll get banned again.
Here is a Screen Shot :

Resource : Voidnish | Download
The software will change your Mac adress as desired by you. And your computer will be a complete stranger to the ISP server. So it might work in some cases but most of all you'll get banned again.
Here is a Screen Shot :

Resource : Voidnish | Download

