|Go to Control Panel > Folder Options > View and make sure you have "Show hidden files and folders" is checked. No harm leaving it that way in XP.|
If that fails then temporary set to show protected system files too but I would not recommend leaving it like that.
If one or other of the above allows you to see the files then we need to work out why.
If they are set as hidden you can bulk highlight (Ctrl+A) then unhide them in Properties.
Always pop back and let us know the outcome - thanks