Riot,

It seems that if this is for educational reasons, then you wouldn't be trying to run it from a USB drive to start with. You probably will not be able to get this to work, because you will still have to make all the registry additions to the OS. It's like you are trying to get around the requirement of having administrative access in order to install Cain and without an OS exploit of some kind, you are out of luck unless you pull the hard drive out or use some alternative boot method. Also, unless your teacher has very very easy passwords, you won't get it with the trial version of LC4 because of the brute-force attack being disabled.