Maybe is this a little bit illegal.
And very evil.
This is not that easy, but if you install this program Save Keys Undetectable 6.2, find it on , then can you see everthing that has happen to you computer every login and password, if you install a program, like that in you school, or something else, you will could hack everyone that has logged in, on that conputer.
When you View the log it will look like this
>>RuneScape - the massive online adventure game by Jagex Ltd - Microsoft Internet Explorer<<
ar[BackSpace][BackSpace][BackSpace][Alt][Alt]master2god0pokimon
Then is the username master2god0 and password pokimon
It works for all things, lile wow, runescape, msn, hotmail.