Here's something I prepared earlier.... (you need to have admin rights)
Turn off simple file sharing under Tools->Folder Options->View (although I think this is WinXP Pro only).
Right click the folder in question->Sharing & Security->Security Tab->Add. Type in either your username or "Administrator" and click the "Check Names" button. It should complete the proper user for you. OK out, then give the new addition full access rights.
If there are numerous sub-folders (and there will be in Document and Settings) you will need to go into the advanced section and look into the "Permissions" and "Owner" tabs (e.g. Replace owner on subcontainers and objects checkbox for the Owner tab).