Gayle,

What you're trying to do can be achieved through a mix of skin and DNN page settings. From a skinning point of view you can render the nav as a list and then use CSS to apply a background image to the menu items and hide the text. Loom at these examples by Timo on how to render the menu as a UL (http://dnnskinextensions.codeplex.com...). To get the sub menus to not show, within the page setting there's the option to "Show in menu" uncheck this for the sub menu pages and they'll not be included. For the horizontal menu, you can then use another instance of the nav skin object to render only child pages (there's an example of this in the samples from Timo as well).

Hope this helps,

Rick.