Opening a DOS Window to either the Drive or Directory in Explorer

Add or Edit the following Registry Keys

[HKEY_CLASSES_ROOT\Directory\shell\opennew]
@="Dos Prompt in that Directory"

[HKEY_CLASSES_ROOT\Directory\shell\opennew\command]
@="command.com /k cd %1"

[HKEY_CLASSES_ROOT\Drive\shell\opennew]
@="Dos Prompt in that Drive"

[HKEY_CLASSES_ROOT\Drive\shell\opennew\command]
@="command.com /k cd %1"

These will allow you to right click on either the drive or the directory and the option of starting the dos prompt there will pop up