ARE YOU AFRAID OF THE DARK

Hello,

My name is Dakota Thomas and I am a new screenwritter. I am in the process of reserecting the Nickelodeon show "ARE YOU AFRAID OF THE DARK". I have a few questions and don't know who to turn to.

How do I sumbit the script?

What is the best way to contact Nickelodeon?

Who at Nick should I send my script to?

How do I copyright an idea that has already been done before?

thanks,
Dakota Thomas