How to hack a computer?

There are several approaches to this. Which approach to use kind of depends on the system and network. You seem like you are a little technically inclined so I'll refer you to www.backtrack-linux.org, or if you are not familiar with linux at all, you should probably try using mint or ubuntu for general use before taking a crack a backtrack.

Use there forums and wiki for in depth information. It looks like your looking for more than just a step by step process to exploit a computer, which is a good sign xD. I'm sure you will find those resources useful.

@ Dominik, No lol. certain configuration (particularly generating keys via gpu) can easily generate 10s of thousands of keys a second. Even a high level scripting language like python can guess a character key in less than a minute. Programs and scripts play a big role in hacking, especially concerning information gathering and cracking.

Hacking is 90% wit and 10% computer skill... there is actually no program for generating password(except brutus or something like that...) But it would take years to generate even a 4 letter password with whole keyboard characters...Think of some guys use brains instead of programs to get to another computer... :)

I went to tafe college to do computer courses and they don't teach hacking there either, so you on your own, maybe cause it is illegal??