Shahn,

These pages look at some of the secular historical evidence for Christ's existence.

http://www.gotquestions.org/did-Jesus-exist.html

http://www.probe.org/content/view/18/77/

It is very important that you Google each point to get opposing views, as these are religious site. But it will start to point you towards an examination of the evidence.

Regards,

Blacknad.