you will need to change the code for your images and download nivo slider and put it into the root also put the images into the demo>images folder
<link rel="stylesheet" href="/nivo-slider/themes/default/default.css" type="text/css" media="screen" />
<link rel="stylesheet" href="nivo-slider/nivo-slider.css" type="text/css" media="screen" />
<link rel="stylesheet" href="style.css" type="text/css" media="screen" />
<div align="center>
<div id=">
<div class="slider-wrapper theme-default">
<div class="ribbon"></div>
<div id="slider" class="nivoSlider">
<a href="http://katoon.co.uk/index.php?action=forum">
<img alt="" title="Join Our Minecraft Community Today!" src="/nivo-slider/demo/images/banner.png" /></a>
<img alt="" src="/nivo-slider/demo/images/banner34.png" />
<img alt="" data-transition="slideInLeft" src="/nivo-slider/demo/images/chest.png" />
<a href="http://katoon.buycraft.net/category/view/5340">
<img alt="" title="Click The Picture For More Information About Mystery Chest" />
<img alt="" data-transition="slideInLeft" src="/nivo-slider/demo/images/chest.png" />
<script type="text/javascript" src="/nivo-slider/demo/scripts/jquery-1.7.1.min.js"></script> <script type="text/javascript" src="/nivo-slider/jquery.nivo.slider.pack.js"></script> <script type="text/javascript">
$(window).load(function() {
$('#slider').nivoSlider();
});
</script>