The German weekly magazin "Der Stern" has this weeks leading main article about this subject
The Truth Behind The Legend
I don't think, anyone waits for my translation. (Which means, if you wish this, you get nothing else for christmas!)(Everyone on this threat, I was just told by a voice out of a cloud.)
Well, the tendence of the article is the same as already said here (nearly, as there it is said that Jesus was real): no-one knows anything exactly, all is more or less tendency of the writers or those, who collected the different writings for the bible.