You can find out what your IP address is by going to www.tomahawk.ca/iptest.aro
This page will report your IP address as is seen by the outside world. You may have an 192.168.x.y or 10.x.y.z address configured on your machine. These IP addresses are local LAN addresses. The IP that is reported by the link above reports your IP as is seen by the world outside of your LAN.