ok, first off, let me point out that in order for this to work you must have a few requirements:
1. you must know the person whose account you want (help if they're someone close, like a neighbor)
2. you mustt have a working copy of WoW
3. you must have "MacroGamer" (i don't remember where i got mine, search arounf a bit and you'll find it)
here we go...
First find out what your MacroGamer shortcut button is (the one for starting the recording). Next, get the person whose account you want to come over to your house and sign onto wow. When they get to the log in screen press the button that starts MacroGamers recording(make sure you have it set to "record pauses", or whatever). after they have logged in and begin playing wait for them to go to the bathroom or leave or something. then minimize WoW and save the MacroGamer file. Close MacroGamer and let them finish playing wow.
Tada! you now have a file that'll let you log onto a persons account!
to do this you must:
1. open up MacroGamer and start it
2. Boot up WoW
3. start the MacroGamer file that you recorded
4. it shhould log you right into your friends account right by itself.
(if you want to doublecheck go to a Word doccument or something and start it there)
Good luck!
what you do with the person's account is up to you. you could just play on it, or you could hack it. your choice.