This code will make it so that the person's avatar will become a link to their profile.

Go to: => Mini Profile Template

change {avatar} to:

<script>
var a = '{display_name}';
var x = (a.match(/view_profile\/user\/(.+?)(\/|"|\/")/))?RegExp.$1 : '';
document.write('<a href="/action/pm_send/to/'+x+'">{avatar}</a>');
</script>