Will Christians go to heaven with Muslims?

Question: Will Christians go to heaven with Muslims?
Answer: As far as I understand the Holy Quran, all true believers will go to Heaven, inshAllah, while all who know in their hearts the truth, yet reject, will go to Hell. The rest to whom it is not clear, and they are still searching, sifting religions and seeking the truth, I don't know. But Allah knows what is in the hearts, and He is the best judge. He gives life and food and clothing and the comforts of this world in varying amounts to all, but guidance is given only to those who seek. We humans have been endowed with free-will, and Allah wants us to acknowledge and worship Him without any compulsion. That is why, guidance is for only those who seek it. Allah sent many prophets throughout the ages to inform, guide, give glad tidings and warn humanity. The source and the message was always the same. In the Quran, Allah speaks very highly of some Jews and Christians, informing us of how pious they are. Yet, the Quran is also replete with examples of how people throughout the ages have rejected the message, how the message has been changed/modified/corrupted, and what are the pitfalls that one must be careful of.
Daily, in our prayers, we recite the opening passage of the Quran (Surah Fateha) in which we pray for guidance and to be protected from following the path of those earn the wrath of God or who go astray.
http://www.searchtruth.com/chapter_display_all.php?chapter=1
Being labelled a muslim/ christian/ jew/ hindu or anything else, or being born in a certain religion doesn't really seem to make any difference. The basic test is of the individual heart and soul. Those who truly believe, actively seek guidance, and try to live their life according to the guidance, in piety, ever aware of the presence of God, and the surety of returning to Him, of the Judgement and the Hereafter, will go to Heaven as that is the promise of God.
Holy Quran 5:119 Allah saith: This is a day in which their truthfulness profiteth the truthful, for theirs are Gardens underneath which rivers flow, wherein they are secure for ever, Allah taking pleasure in them and they in Him. That is the great triumph.
http://can-you-answer.com/Truthfulness.htm