HOw to patent or copyright an Internet Website Name?

I have an internet website. It is a great idea along the lines of a 99cent store. But technology not retail. Anyways i have not put it live because I am afraid someone will steal my idea and do it bigger and better.

How do I obtain a patent? Am I patenting the name/or idea. Also what is the cost associated with this. Finally do I incorporate the business now or can I do it after the patent if the business does indeed take off?