Some people here are trying to prove that Christianity is a new religion. Can you point out a verse from Bible where Christianity was declared as a religion? Do the term 'Christianity' exists? You say Jesus 'Christ'? But was his name Christ?
Religions don't need to name themselves within their own religious books to be a religion, I don't see how this argument works. Also Christ means, I think, the Messiah in Hebrew. It's an epithet not a name.
It's also mentioned in the bible in case you're wondering. http://bible.cc/matthew/16-16.htm
The fact is that there is only one religion - Islam. From the beginning of the world. This is why Islam is the only religion who recognizes Moses (pbuh) and Jesus (pbuh) as Prophets. You never find them preach 'Jewism' or 'Christianity'. Some people invented these words and try to portray as they are different religions.