IPToLocation is a sidebar gadget, can find the geographical location associated with an IP Address. It includes detailed information such as the Country, State, City, Metro, Zip or Postal Code, the latitude and the logitude of a given IP. It can be downloaded and can be installed as a any other windows gadgets and is very easy to use.
It can also find out your IP address by clicking on the Get My IP Address button. Download the find and extract the iptoloc.gadget file and double click on it to install the gadget. It supports Windows Vista and Windows 7, both 32 and 64 bit versions.

The license of this software is Freeware, you can free download and free use this ip utility software.