That's cool
I combined macgyver24 and virtualno's tweaks and added a new image (attached) to my forum/images/misc directory to have the option of both
I've attached a screen grab from my board as an example too.
<a href="showthread.php?$session[sessionurl]t=$thread[threadid]$thread[highlight]" target="_blank"><img src="$stylevar[imgdir_misc]/new_window.gif" alt="New Window" width="16" height="16" border="0"></a>
<a href="showthread.php?goto=lastpost&$session[sessionurl]t=$thread[threadid]$thread[highlight]" target="_blank"><img src="$stylevar[imgdir_misc]/new_window_last.gif" alt="New Window" width="16" height="16" border="0"></a>