Last Updated Oct 23, 2009 11:23 AM EDT
That's the idea behind My Lockbox, which password protects and renders a folder invisible to all users of the PC. Once you protect a folder, it disappears from Windows Explorer and DOS command line searches -- even for the computer's administrator. The only way to see the folder is to re-enter the password in My Lockbox.
My Lockbox is free and allows you to lock and hide a single folder. If you're also harboring the Kentucky Fried Chicken recipe and need more folder-hiding flexibility, you can upgrade to Hide Folders 2009 for $29.99. I've found My Lockbox to do just fine, though, since there's no limit on how many files and subfolders you can store in the folder you're hiding.