Need a little help :)

Ummm i'm a super beginner for game hacking and i'm just wondering, if I wanted to hack a big game like Combat Arms with HackSheild and all that, how would I do it. For example, how would I make a bypass for Hackshield?

I know that I have to unpack Engine.exe, but can someone tell me how to do that?

Oh or could you give me a "To-Do List" that'll give me an idea of what I need to do?

I think theres a thread with hackshield information somewhere around here... But I would say that to "unpack" Engine.exe you could decompile it (though i doubt that would have any information). BTW i have next to none hack [coding] experince