Those who are not Catholic we commend to the grace of God, provided that they not knowingly reject Christ. As I said before, Hell accepts only those who knowing, willingly reject Christ, provided that He has been properly represented by His messengers, and still rejected.
It would be contrary to God's Mercy to claim, for example, that someone would go to Hell simply for having a different theology. For example, an 19th century native American Indian, whose contact with Christ's messengers would have most likely been distorted, would go to Hell. This would only happen if the Faith were fully and genuinely represented to him and he still rejected it.
Born Againers and other Protestants should not criticize the Church so much, after all, we gave the Holy Scriptures, our monks preserved it, as well as many pagan writings.
Those who never had heard of Christ, and have commited serious evils, such as the old pagan Romans might have, would go to Hell, but perhaps not a very hot level.
Most folks go to Purgatory because their just stupid. Its unbearibly hot down there too.