Security password to use laptop

Giganews Newsgroups
Subject: Security password to use laptop
Posted by:  yvpark
Date: Mon, 14 Jun 2010

My teenager has frozen three hard drives because she refuses to run security
updates.  She's now at an age where she must pay to get her pc fixed or she
will continue to do without.  She now tries to use my laptop when I'm not
here and I'm tired of hiding it.  Is there some way I can set up a password
where only I can use it?  I am still using Windows XP on a Sony Vaio.  Please