function to add text to comment author

I finally got my issue resolved of adding to the database! Yay and thanks to the mod who pointed me to the right directon!

Now what I am trying to do is to put an icon or some text next to an author that meets certain conditions from the wp_users table. What function can I use? I tried some of the comment functions but they all either remove the comment itself or replace them ALL with the text I specify.

function embed_admingraphic(){
	echo "<img src=admin.jpg>";
}

add_filter('comment_text', embed_admingraphic);

Thi puts my admin icon in place of every comment on my blog. What I want to do is to append or prepend it so it goes in after or before.

It would be nice to add a <p></p> right after the comment authors name and put what I want in there instead.

If anyone has a good idea, please post it! Thanks