another way of tracing the IP address(i.e. if you know the IP address and you want to know from where is it coming...like if its coming from China, or London, or Australia... what you can do is open the dos command promt and type tracert IPADDRESS so lets say if the IPADDRESS is w.x.y.z, u can do something like tracert w.x.y.z and it will tell u where does the sender's actually reside.