Just like any other thing, your computer has history. You can easily learn the past activities within your system by accessing SYSTEMINFO. This part of Windows XP keeps track of all installations, whether it is hardware or software, as well as data stored, from the moment it was manufactured. This is a handy tool to have, particularly if you are not the firsthand owner of your system. But even if you are, this can be useful should you consider getting an upgrade, or merely interested on how far your system has gone.Simply go to your Start Menu and click on Run. Type in cmd, then type systeminfo, within moments your computer will take you back in time.