My Hidden Folders 2008TM
My Hidden Folders is an essential privacy tool that lets you hide any file or folder in Windows® system. You don't need to dive into the hazy world of low-level file access functions! Once files or folders are hidden they cannot be accessed, searched for, viewed or deleted, therefore no one will know that they exist.

Instead of specifying necessary file/folder names you could define pattern-matching mask to hide a group of files that complies with certain criteria such as same extensions or similar names.