The default template didnt really work for me, so i made a button for it:
Code:
In postbit Find:
<img style="display: none" id="progress_$postid" src="$stylevar[imgdir_misc]/progress.gif" alt="$vbphrase[loading_editor_please_wait]" />
Add under:
<if condition="$show['edithistorylink']"><a href="edithistory.php?do=viewedithistory&postid=$post[postid]" rel="nofollow"><phrase 1=$post[editcount]><img src="$stylevar[imgdir_button]/postedits.gif" alt="$vbphrase[saved_edits]" border="0" /></phrase><a></if>
Pop the attached image in your images/buttons dir, and you should be good to go.
you should be able to do similer with the legacy template, but i didnt bother on my board.