[SOLVED] Problems with creating a dropdown menu

Hello guys,

I´ve a problem with creating a dropdown menu like on the sample page:
http://test.bytesforall.com/sample-page/
(news -> dropdown)

I don´t understand the instructions in the montezuma options. ("About DropDown Menus")
How can I add this dropdown menus under a menu item?
Which css/php files I have to edit?

I don´t have my page online, its actually running on localhost.
A quick instruction for beginners would be nice, thank you!

Best Regards