HOW TO CURE COMPUTER GAME OVERUSE?

MY SON HAS BEN ADDICTED TO WORLD OF WARCRAFT (or warcrap) FOR ABOUT TWO YEARS NOW. HE USED TO BE IN THE GATE PROGRAM AND HONORS CLES IN SCHOOL, BUT AFTER THE ADDICTION, HE GOT HELD BACK AND NOW HE DROPPED OUT OF NINTH GRADE. HE'S GONE NOCTURNAL, HE WONT EAT, HES TOO LAZY TO TALK, HE HATES THE SON, HE HATES GOING OUT OF THE HOUSE, HE WONT DO ANYTHING! WHAT SHOULD I DO? DONT TELL ME TO TAKE THE COMPUTER AWAY CUZ HE GETS violent! AND DONT GIVE ME ANY OF THAT: " HE'LL FIND OUT HE'S BETTER THAN THAT" S*IT, CUZ ITS BEEN 2 YEARS, AND I CANT WAIT ANY LONGER! I NEED THERAPISTS, COUNSELORS, WEBSITES, ADVICE, ANYTHING HELPFUL!