Really, Its really easy. you dont have to have two folders of WoW. Just go to your "Main" folder, Copy the Wow.exe. so you have two of em. And if you want more just copy more of em.. Then open wow.exe, and then the other new wow.exe to open another window..

I hope this helps.

Best regards Jonas.

BTW, I donīt think its .exe on a mac, But I dont have my mac here so I cant find it, hehe ^^,