hahahah you can only trace the IP to the ISP and the ISP would tell you they can't tell you who that is assigned IF that IP is static and if the IP is Dynamic It COULD be traced.. but not for the issue your having. IP would do you no good unless they were stupid and left their box wide open to hack.. and chances are its a winodws box so eve if you could hack it.. I can tell you it is possible

But probably not by most people... which if you could do that then this webserver would be just as an easy target and you could get it yourself

.. im done here!