How do I position images so they are on the bottom right of the page?

If it is a background, put this code in the head of your page:
<style type="text/css">
body{
background-image: url(image.gif);
background-position: bottom right;
background-attachment: fixed;
}
</style>

If it is a regular image, put this in place of the image code:
<img src="image.gif" style="position: absolute; bottom: 0; right: 0;">

In either code, change the bold text to the URL of your image.