The program keeps your personal folders out of sight, but a few security gaps prevent it from being a more rock-solid choice. DirLock's extremely simple interface isn't password-protected and negates the inclusion of a help file. A simple browser or drag-and-drop capabilities to secure folders would be helpful. At the onset, it isn't clear how to protect folders, but an Options visit reveals that the only way to lock (or unlock) folders is to integrate it with Windows. In testing, this added an easily accessible context menu option that quickly locks folders or brings up the password dialog box to gain access to locked folders. This program doesn't offer encryption algorithms like other applications in its class, so we wouldn't recommend using it to conceal highly sensitive data. Despite the absence of a Help file or user guide, DirLock proved to be a fairly straightforward way of protecting folders, and this freeware should suit the needs of most casual computer users.