Windows System Registry

You can access System Registry Editor by clicking:  Start --> Run and type regedit. Now, messing around with the system registry is not a good thing if you don't know what you are doing. You can easily crash your computer by deleting a registry hive. But its easy once you get the hang of it.

By the way, system registry is a hierarchical database of information that defines exactly how your system works, including virtually every part of Windows and its applications. You cannot track/spy on someone using your computer to visit a site by merely looking in the reg editor. There are tools out there that does that.  If the computer is truly yours, and you have previledge access, grab a keylogger(let the user know that you're watching em ). Or better still, get Cain and Abel. And before you go downloading all the keyloggers out there, remember, some of em will turn around and bite you in the a$$.