My brother doesn't respect either of my parents anymore... I know it's puberty, BUT IT'S FUCKING WAY TOO WRONG! He doesn't do any household chores, he spends money on playing World of Warcraft,goes out without even notifying us, AND HE DID PUNCHED MY DAD ONCE! WHAT THE HELL IS WRONG WITH HIM?! can this be corrected? I'm getting concerned, he is destroying his OWN LIFE!

This is more of a complaint than an actual thread. There's actually a complaint thread... On screen as I write this. lol.

Anyhow, assuming you just fail at making threads:

Military school.
Shit changes kids.

I agree with >>2, what do you want to hear from us? You should know the answer better than we do. Do you give him positive reactions to begin with?
In other words, do you show your appreciation for him?
It might be hard cause of his actions but if you don't try, he'll never talk to you.
You need to try to understand him cause it's not a "uncurable disease" something is wrong with the social part at home/school or something simliar I think. And I study psychology, social behaviour and stuff like that, well, not that it makes me a "pro" or something.

"To help someone, we must understand them and their situation"
Well, you used the term "What the hell is wrong with him" instead of help though. Explains a bit what that might be wrong in my opinion.

>>2 doesnt.