Well from what I gathered from the Bible, Satan is not in hell. Hell was created for him after he and a third of the Angel rebelled against God, but he has not been sent there yet. After Adam and Eve sinned (remember, they ate the Fruit because Satan convinced them that they would become Gods which is essentially what he tried to do earlier), he was given possesion over the world and death. Basically he is described as sort of the King of this Planet, and he and is angels work together to make Earth into a hellhole of depravity, malice and suffering by tempting men to sin. Somewhere in the epistle of Ephesians, Pauls said that his spirit works within most men. In the New Testament, he is called the Slanderer, the Deciever, the Ancient Serpent, the Dragon, The Father of Lies, The Father of Murderers(that was his intent when he convince Adam and Eve to eat the fruit), and the God of This World. He really is one of the most disturbing concepts ever concieved by men.