This is not a controversial issue. In the nicest possible way (b/c I don't mean to be rude), but what you just stated is incorrect. Follow here
http://www.google.com/search?q=weight+lifting+stunt+growth&start=0&ie=utf-8&oe=utf-8&client=firefox-a&rls=org.mozilla:en-US:official
The idea that lifting early stunts your growth spurs from the compression on your spine and the hardening of growth plates. If you break your leg at an early age, that has an effect on your growth. Lifting does not and there is no evidence out there to provie it does.
Case in point, Jay Cutler (5'10" #2 bodybuilder in the world), Ronnie Coleman (5'11" #1 bodybuilder in the world), Lou Ferrigno (6'5" Incredible Hulk), and Arnold Schwarzenegger (6'2") all started lifting in their early-mid teens, like 14-16, and they're doing a pretty good job on the height factor. There are far more individuals that prove this including NBA, MLB, and NHL players.
The impression you may get from the number of pro bodybuilders who are only in the 5'6" to 5'9" range is that they're short from lifting so much. A number of pros initially got into bodybuilding b/c they were small guys to begin w/and that had a big influence on them lifting. Not to mention, the shorter you are, the easier it is to put on visible gains.
On top of that, many of these guys have been training for +20 years so, please, don't be scared of getting large. Natural muscle takes a lot of consistency, hard work, and eating the right foods.
The best piece of advise I can give you if you're trying to get bigger is to go to a gym that has a reputation for bodybuilding or atheletic training and ask for references. Most gyms have unqualified staff (even personal trainers w/certifications...you can get those online for $100) and will tell you the wrong thing. It makes me wanna puke when I see a trainer showing someone how to do a 4" squat.
Sorry for the long reply. You struck a nerve w/me. No disrespect intended.