Hi tommgunner,
Do you mean you need to apply a background image to a specific menu item?
In which case I think the following code would do the trick for a list item with a class of .page-item-25:
[code:2vzor0p6]
<ul id="suckerfishnav">
<li class="page_item page-item-25">
<a href="">
TEST
</a>
</li>
</ul>
[/code:2vzor0p6]
[code:2vzor0p6]
#suckerfishnav li.page-item-25 {
background:url(‘images/bla.png’);
}
[/code:2vzor0p6]
You can find the class of WP pages or categories by viewing the source of your page.