Need some help

[darkacid]

I wasn't sure where to post.
But i am from Australia and i just bought my self a American Pitbull Purebreed. I have read alot about the dogs on the internet and have came to have a love for them. So far the dog has been perfect the only thing im having problems with is when the dog doesn't get it's way he growls and barks , and i say NO! and he still keeps going.. Any idea on how to stop that or what it is? I can't have the dog show agreesion since i have next door neighbours who own dogs. I have been socialising him with other dogs and he loves it , i just don't want tyson once he get's big to take a bite at me and i will have to put him down. Since pitbulls are going to be banned in Australia they are going to look for agressive dogs and put them down.

My second question is the dog i purchased had line breed, Boudreaux/Jeep ,
I just wanna know has anyone got any pictures of this sort of breed?
Are they a good breed?
Do they get really big?
And just some general information if you could fill me in

I would be greatfull for all your help..

Thanks
- darkacid