Tab on command prompt

Autocompletion facility by using tab on DOS command prompt is very useful.
Obviously it must be created by some lazy worker like me ;-)

AW, following is the way to configure your system to work with tabs on cmd:

You can expand the full name of a file or directory using a character of your choice.

1. Close all Command Prompts
2. Start the Registry Editor
3. Open HKEY_CURRENT_USER\Software\Microsoft\Command Processor
4. If not present, add Key: CompletionChar
5. If you like to use TAB-Key for expand: set value (REG_SZ): "9"

Above mentioned text is copy-paste from following site:
http://www.onecomputerguy.com/dostips.htm