My nephew has been using my computer since July 10. By logging in through guess. Now he has been missing since August 13, we are trying to see what web sites he has beeen on. How can we do that.

How can I access the history of my computer. My nephew has been login in through guess and now he is missing we are looking for clues as to what web sites he was on.

C:\Documents and Settings\user name\Local Settings\History (In Windows XP)