If you use the DOS shell in windows at all (also known as the command prompt), you'll find that it is a lot easier to use with the auto-complete feature turned on. When auto-complete is turned on, you can use the Tab key to complete commands when selecting files or directories. To turn on auto-completion, start by opening the registry editor (go to Start/Run and type regedit). Once the registry editor is open, on the left side of the program, navigate to HKEY_CURRENT_USER\Software\Microsoft\Command Processor. On the right side of the program, you should then see a parameter called CompletionChar. Set this to 0x00000009 to use the Tab key as the auto-completion character. If you like, you can set this to other values which correspond to other keys.