1. Navigate in your Registry to
HKEY_LOCAL_MACHINE/Software/Classes/Folder/Shell and create a key called "Command Prompt" without the quotes.
2. Set the default string to whatever text you want to appear in the right-click menu
3. Create a new key within your newly created command prompt named "command" and set the default string to:
Cmd.exe /k pushd %L
4. The changes should take place immediately. Right click a folder and your new menu item should appear.