Hi sorry for the late reply on this, here's the <div>'s and css I used to hide the plugin from IE7....
On the article in Joomla around the plugin:
<div class="slide">{nameofplugin}</div>
<div id="unqiuename"> </div>
In the index.php file in the <HEAD> section (if you don't already have an IE7 only css file for your template):
<!--[if IE 7]>
<link href="templates/<?php echo $this->template ?>/css/ie7.css" rel="stylesheet" type="text/css">
<![endif]-->
In the ie7.css file:
.slide {
display:none;
}
#unqiuename {
background-image:url('/../images/Cars_007.jpg');
background-repeat:no-repeat;
width:200px;
height:125px;
border:1px solid #FFDA0D;
padding:4px;
background-position: center center;
margin-left:10px;
}
The .slide class will hide the plugin from IE7 browers and the second div along with the 2nd bit of css will display a background image instead. I added several more uniquenamed background images as I had several pages using the plugin.
Hope this helps and makes sense!
Support 
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