[SimplePie] Only one category not entire feed...

[lileecyot]

Hi I'm really new to wordpress so please bare with me!

I am using simplepie in the side bar on my home page. The php i have in my 
sidebar.php is this:     
<?php echo 
SimplePieWP('http://superiorstables.wildspiritdesigns.com/horsepress/feed');?>

I did figure out how to format the templates like I want and it looks like 
this: 

<div class="simplepie">
        {IF_ERROR_BEGIN}<p class="error">{ERROR_MESSAGE}</p>{IF_ERROR_END}

        
        <ul class="simplepielist">
                {ITEM_LOOP_BEGIN}
                <li><strong><a href="{ITEM_PERMALINK}"><p><span 
class="simplepietitle">{ITEM_TITLE}</span></a><br /><span 
class="date">{ITEM_DATE}</span></strong><br 
/>{TRUNCATE_ITEM_DESCRIPTION}</p></li>
                {ITEM_LOOP_END}
        </ul>
</div>



The problem is its pulling info from all my post categories and I only want it 
to pull from one, my "news" category. I'm sure this is simple but I've spent 
over 2 hours with no luck!!

Any help would be greatly appreciated