you need to find a shoutbox and then using the default theme post this code in your headers , this will add a shoutbox the left side of your forum. i would watch my width i used on my shoutbox. you can also add other things besides a saybox
to move your saybox up and down using this code just add <br> before it to move it down take away <br> to move it up
<table border="0" cellpadding="0" cellspacing="0" width="100%" height="100%">
<tr>
<td align="left" >
<br>
<br>
*PUT YOUR SHOUTBOX SCRIPT HERE*
</td>
<td align="center" valign="top">
hope this post is ok