I also do not believe that the traditional "dead people go to either heaven or hell" concept is correct.
Not being dead, I could be wrong.
But, I am not dying to find out right now.
The Orthodox view presented here is quite interesting.
I find there are many Orthodox concepts that are quite good.
It is my understanding that according to the Bible, after death, all people go to Hades which is divided into two regions - the pleasant part which is called Paradise- spoken of when the story of Lazarus is told as Abraham's boosom and the unpleasant part which is separated from the pleasant part.
Those who are saved will enjoy the pleasant part and the rest will not.
However, that is not the end.
There will be a final judgement and then all beleivers will be part of the New Jerusalem and those who reject the Lord after being given many chances to accept Him, will be thrown into the lake of fire.
It is not a matter of behavior as some have already stated. To God, sin is sin and someone who sins a bunch of small sins is not any better than a murderer.
But, He forgives all of us.
And when we are in the New Jerusalem with Him we will be in oneness with Him and there will be no sin.
Here is a set of articles about the New Jerusalem and the concept of heaven.
I like the history of heaven chapter because it shows how the current concept of "heaven" has been influenced throughout history.http://www.affcrit.com/archives/ac_00_02.html