Place scrolling text box over image using PS slices and Dreamweaver

I'm not an experienced coder or designer, but I've been teaching myself steadily over the last several months. I'm attempting to put a user scrolling text box for a news section over a PS image slice using CSS. No matter what I try I can't get it to work and I believe part of the problem is that I don't know where to put it. Here is what I'm attempting to do.

I am trying to put the text in a defined scrollable box in the news portion of the site.

css:
#news-box_ {
position:relative;
left:0px;
top:447px;
width:493px;
height:560px;
overflow: auto;
background-color: transparent;
}

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