It would be nice if there were an opportunity to change your mind in hell, but the Bible gives no indication that this will be possible. Hebrews 9:27 says we are all "destined to die once, and after that to face judgment."
Another passage that seems to shut the door to a "second chance" is a parable Jesus told in Luke 16:19-31. The parable was about a rich man who died and went to hell. In his agony, the rich man looked up to heaven and cried out for mercy. In response to his cries, the man was told a chasm separated heaven and hell—a chasm that could never be crossed.
As hard as it is to hear, eternal separation from God is the punishment for people who don't accept Christ as Lord and Savior. But please understand that it's not God's desire for anyone to spend eternity in hell. As it says in 2 Peter 3:9, "He is patient with you, not wanting anyone to perish, but everyone to come to repentance."
http://www.christianitytoday.com/iyf/advice/goodadvice/24.14.html
Dang!
You’ve beaten me to all of it!
(I should stay up later...)