You don't want to delete any of them. All Users folders are common to all users of the machine. Default user contains the "templates" for any new user accounts that are created.

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Doug Knox, MS-MVP Windows Media Center\Windows Powered Smart Display\Security
Win 95/98/Me/XP Tweaks and Fixes
http://www.dougknox.com
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Per user Group Policy Restrictions for XP Home and XP Pro
http://www.dougknox.com/xp/utils/xp_securityconsole.htm
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"Lizzie" <Lizzie@discussions.microsoft.com> wrote in message news:4019AFF3-30BB-4B01-AC73-10E215753801@microsoft.com...
> Hurricaine Rita did a job on my pc's. My new one has all users, Compaq_Owner
> and Default User. Each account has different folders, programs, etc. Whic is
> the correct account and how can I delete the others.