Css/Theme help with drop down menus

Ok I need some help. I’m trying to have a drop down menu, but I’ve tried almost every wordpress plugin. I can’t seem to get the php code to match with the css since I know nothing about css.

So my questions are
1. Where do I insert this
<?php gdd_dropdown_menu('Site Home'); ?>
2. How would I insert an image text where the site title appears, without messing up the css.

Currently I’m using this one. http://goudendouche.com/plugins/dropdown-menu-plugin/
If someone knows of a better plugin please tell me.

And my site using the drop down is here. http://ultimatechristianreviews.com/

The only thing I got rid of from the original header is that where it is now
<ul> </ul>
it was
<ul><li class="page_item"><a>">Home</a><?php wp_list_pages('depth=1&title_li='); ?></ul>

[Moderated: Too much code. Please consider placing the code in a text file on your site with a link here -or- use a pastebin service such as http://wordpress.pastebin.ca. Thanks!]