Replace this
HTML Code:
<span class="postbit_reputation" id="repdisplay_{vb:raw post.postid}_{vb:raw post.userid}">{vb:raw post.reputationdisplay}</span>
with this;
HTML Code:
<span class="postbit_reputation" id="repdisplay_{vb:raw post.postid}_{vb:raw post.userid}" title="{vb:raw post.username} {vb:raw post.level}">
<vb:each from="reputationdisplay" value="row">
<img class="{vb:raw row.class}" src="{vb:stylevar imgdir_reputation}/reputation_{vb:raw row.posneg}{vb:raw row.imgext}" alt="" />{vb:raw row.rowend}
</vb:each>
</span>