Hey,
first you need to use the correct path to your js file. I'd put the javascript code in the head section (header.php, etc.). I'm not sure where it's located on your server but you should use an absolute url like:
<script type='text/javascript' src='http://my-website/wp-content/themes/mytheme/js/jquery.aviaSlider.min.js'></script>
You also need to add following javascript code (i.e. to your head section) - please use your slider id instead of "frontpage-slider":
<script type='text/javascript'>
$('#frontpage-slider').aviaSlider({
blockSize: {height: 80, width:80},
transition: 'slide',
display: 'diagonaltop',
switchMovement: true
});
</script>
then you need to create a list of images in your body section, please notice the id - you can choose any id you like :)
<ul class='aviaslider' id="frontpage-slider">
<li><a href="images/slides/1.jpg" title="" ><img src="images/slides/1.jpg" alt="" /></a></li>
<li><a href="images/slides/2.jpg" title=""><img src="images/slides/2.jpg" alt="A heading of your choice :: This is the image description defined in your alt tag" /></a></li>
<li><a href="images/slides/5.jpg" title=""><img src="images/slides/3.jpg" alt="Another heading :: Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor" /></a></li>
<li><a href="images/slides/4.jpg" title=""><img src="images/slides/4.jpg" alt="No Heading, just a line of content" /></a></li>
<li><a href="images/slides/5.jpg" title=""><img src="images/slides/5.jpg" alt="" /></a></li>
</ul>