It's good to know the IP address of your computer. With this information, you can track your computers usage online, and will also know how to change it if you want to surf unnoticed. This tutorial will show you exactly how to find the IP address of your PC, so you will never be lost again. There are a number of programs that require your IP address, for example if you are setting up an external device like an XBox live to your Internet connection, you will need to make sure the IP address is correct, or it will not connect. All of your internet enabled devices must have IP addresses that match the IP address on your modem.