Add menu items to SHIFT + right click menu on Windows

Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\Directory\shell\CommandPrompt]
@="Open Command Window Here"
"Extended"=""

[HKEY_CLASSES_ROOT\Directory\shell\CommandPrompt\command]
@="cmd.exe /k pushd %L"

Note the "Extended"="" command on the fourth line.

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\Directory\Background\shell\CommandPrompt]
@="Open Command Window Here"
"Extended"=""

[HKEY_CLASSES_ROOT\Directory\Background\shell\CommandPrompt\command]
@="cmd.exe /k pushd %L"

You probably want to add to the Background