While working with Comamnd line prompt (press Start -> Run -> type cmd and press OK), it is very convenient to have windows completing the comamnd name or the directory name instead of having you writing all down.
To make this happen do the following:
1. Open the registry editor by: Start -> Run and type regedit or C:\WINDOWS\regedit.exe
2. Locate the following path: HKEY_CURRENT_USER\Software\Microsoft\Command Processor
3. On the right side of the window change the value of CompletionChar to 9 and press OK
4. Close the registry
Notice: working with the registry might be irreversible and cause system instability. We recommended to backup the registry prior to making any change within it.