The most popular of the key loggers is the application PortsLock. This is available for free on the Internet and can be downloaded without a problem, and runs silently on your PC. The only thing you have to do to get access to this application is to have a list of your work computer's IP addresses that are all over the web. What this does is allows you to find the IP address of any other computer that is connected to your computer, and if it's not there, you're finding out about it.
Once you have done this, you should then be able to get the IP address of any Windows machine that you can find on the web. Once you do this, then you can plug your mouse into your computer and then right click the place you found that IP address from, and that will open up your PortsLock application. The next step is to click 'start' on the toolbar and then navigate to 'Administration'. From here, click 'Add or Remove Programs', then select the application you downloaded called PortsLock, then click 'install' to start the installation process. If you had a problem with the first program you downloaded, just click 'advanced options' and then click 're-download' to make sure you get the latest version of the program.
Finally, just install the application as normal, but this time when you connect to the web from your computer, you must navigate to the website where you are using Windows to connect to the internet. From here, simply enter the IP address of your work computer, and if it's not there, then you now know that the IP address is being logged by Windows. This is how you spy on someone's computer.
