Run this registry script, which forces Windows to show so called "superhidden" files:
Copy the contents of the Quote box to Notepad, and save in a location of your choice as Unhide.reg (make sure to save as type: "All Files")
Doubleclick Unhide.reg, and answer 'yes' when prompted to add its contents to the Registry, then restart your computer.
This is only for XP or 2000 systems
Quote:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer]
"SearchSystemDirs"=dword:00000001
"SearchHidden"=dword:00000001
"IncludeSubFolders"=dword:00000001
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"Hidden"=dword:00000001
"ShowSuperHidden"=dword:00000001
then try again