OK, your english is fine, my fault Operating System, WinXp I'm guessing from the file location?
You have given me the files location and not what the file is called?
Since the file you are trying to delete is in the Administrator area and I assume your are logged on as the Administrator, you should have permission to delete it. Are you getting any errors or messages when you try to delete it?
Have you tried deleting it from safe mode?