How to hack a wep key with cmd is it even possible?

i just want to know how to get the wep key i am in the school and use the computers and it automaticly inputs the wep key is there any way to view it its kinda stupid to say i am a hacker other person: can you get the wep key for me Me: don't know how so i don't look like a hacker if i can't get it and me personally i am a hacker but i really just want a simple way to get the wep key using a computer and not by asking teachers beacause they know i'm a hacker and they do not know what it does please help...