Help with adding sub-menu in existing navigation

They have: 10 posts

Joined: Aug 2006

I need to ad a sub-menu to my existing navigation. Could someone point me in the right direction. I would like something easy but efficient, something that works well with my existing navigation and works well with the major browsers. I am learning as I go. I need to ad sub-menu to the About Vicki section for the Resolutions. The navigation menu that I would like to ad the sub-menus to is located at http://www.myvocallesson.com Thanks so much for any help in advance.