[HKEY_CLASSES_ROOT\Directory\shell\DOS_Prompt]
@="Linea di comando"

[HKEY_CLASSES_ROOT\Directory\shell\DOS_Prompt\command]
@="C:\\WINNT\\SYSTEM32\\cmd.exe /k cd %1"

[HKEY_CLASSES_ROOT\Drive\shell\DOS_Prompt]
@="Linea di comando"

[HKEY_CLASSES_ROOT\Drive\shell\DOS_Prompt\command]
@="C:\\WINNT\\SYSTEM32\\cmd.exe /k cd %1"
 

Elenco tips di registro