Um, yeah. The whole basis of Christianity is the belief of Jesus Christ--thus the name of the religion.
I know what you're saying, but you really can't be Christian unless you go along with the whole Jesus/Bible thing.
Have you thought of looking into other spiritual areas? Buddhism, Judaism, Hinduism, or any of the other 'isms' out there? Remember, there are many, MANY avenues to explore and maybe you can just take a little from column 'a' and some from column 'b' and form your own thing. You don't have to pigeon-hole yourself into just one religious direction...you can just take a little from each and enjoy it in your own way.