Download Real Spy Monitor
Real Spy Monitor is an application that works very similar to a key logger but this is a more complete version of those tools. It's capable to monitor your computer and every activity performed there; if you have a computer accessible for everyone, this may be useful for you. It will keep a record of all the information written in your machine, files downloaded, software that was working at the time, as well as the activity while surfing the Internet, such as WebPages visited, emails, and content of instant messengers, etc.
Compatible with every Windows operating system in the market. Give it a try!