Ive got a work around....
Install the shoutbox as normal, then go to
Style Manager > Edit Templates and select adv_portal.
Find
$home[centerblocks]
and add this code above it
<if condition="$vboptions['shoutbox_forumhomeshouts'] == 1">
<!-- shoutbox hack (by squall14716) -->
<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="100%" align="center">
<thead>
<tr>
<td class="tcat" colspan="2">
<a style="float:$stylevar[right]" href="#top" onclick="return toggle_collapse('forumhome_shoutbox')"><img id="collapseimg_forumhome_shoutbox" src="$stylevar[imgdir_button]/collapse_tcat$vbcollapse[collapseimg_forumhome_shoutbox].gif" alt="" border="0" /></a>
<a href="shoutbox.php?$session[sessionurl]">
<if condition="$vboptions[shoutbox_numberofforumhomeshouts] == 1">
<phrase 1="$vbphrase[shoutbox_forumhome_latest]" 2="" 3="$vbphrase[shoutbox_forumhome_shout]">$vbphrase[shoutbox_forumhome_x_y_z]</phrase>
<else /><phrase 1="$vbphrase[shoutbox_forumhome_last]" 2="$vboptions[shoutbox_numberofforumhomeshouts]" 3="$vbphrase[shoutbox_forumhome_shouts]">$vbphrase[shoutbox_forumhome_x_y_z]</phrase>
</if></a></td>
</tr>
<tbody id="collapseobj_forumhome_shoutbox" style="$vbcollapse[collapseobj_forumhome_shoutbox]">
<tr valign="top">
<td class="alt2"><a href="shoutbox.php?$session[sessionurl]"><img src="$stylevar[imagesfolder]/icons/icon2.gif" alt="" title="" border="0" />
<if condition="!($permissions['shoutboxpermissions'] & SHOUTVIEW) || $bbuserinfo['shoutbanned'] == 1">
<td class="alt1" width="100%"><span class="smallfont"><b>$vbphrase[shoutbox_noviewperms]</b></span></td>
<else />
<if condition="$vboptions['shoutbox_iframe'] == 0">
<!-- IF THE IFRAME IS DISABLED -->
<td class="alt1" width="100%"><span class="smallfont">
<div class="smallfont" style="height:150px;width:100%;overflow:auto"><hr> $latestshouts<br/> </div> <if condition="$vboptions['shoutbox_shoutonforumhome'] == input && $permissions['shoutboxpermissions'] & SHOUTPOST && $bbuserinfo['usergroupid'] != 1"><form action="shoutbox.php" method="post"><input type="hidden" name="do" value="addshout"><input type="text" name="message" value="" size="60" <if condition="$vboptions['shoutbox_shoutcharlimit'] != 0">maxlength="$vboptions[shoutbox_shoutcharlimit]"</if>> <input type="submit" name="submit" value="$vbphrase[shoutbox_shout_now]" class="bginput" accesskey="s"></form></if> <if condition="$vboptions['shoutbox_shoutonforumhome'] == textarea && $permissions['shoutboxpermissions'] & SHOUTPOST && $bbuserinfo['usergroupid'] != 1"><center><form action="shoutbox.php" method="post"><input type="hidden" name="do" value="addshout"><textarea name="message" rows="5" cols="60" class="bginput" wrap></textarea><br><input type="submit" name="submit" value="$vbphrase[shoutbox_shout_now]" class="bginput" accesskey="s"></form></center></if>
</span></td>
<else />
<!-- IF THE IFRAME IS ENABLED -->
<td class="alt1" width="100%"><span class="smallfont">
<if condition="$vboptions['shoutbox_shoutonforumhome'] == input && $permissions['shoutboxpermissions'] & SHOUTPOST && $bbuserinfo['usergroupid'] != 1"><form action="shoutbox.php" method="post"><input type="hidden" name="do" value="addshout"><input type="text" name="message" value="" size="60" <if condition="$vboptions['shoutbox_shoutcharlimit'] != 0">maxlength="$vboptions[shoutbox_shoutcharlimit]"</if>> <input type="submit" name="submit" value="$vbphrase[shoutbox_shout_now]" class="bginput" accesskey="s"></form><br /></if>
<iframe src="shoutbox.php?$session[sessionurl]do=iframe" width="100%" height="165" scrolling="auto" frameborder="0" name="forumhome_shoutbox" id="forumhome_shoutbox"></iframe>
<if condition="$vboptions['shoutbox_shoutonforumhome'] == textarea && $permissions['shoutboxpermissions'] & SHOUTPOST && $bbuserinfo['usergroupid'] != 1"><center><form action="shoutbox.php" method="post"><input type="hidden" name="do" value="addshout"><textarea name="message" rows="5" cols="60" class="bginput" wrap></textarea><br><input type="submit" name="submit" value="$vbphrase[shoutbox_shout_now]" class="bginput" accesskey="s"></form></center></if>
</span></td>
</if>
</tr>
</if>
</tbody>
</thead>
</table>
<br />
<!-- end shoutbox hack (by squall14716) -->
</if>
This will put your shoutbox above your welcome box. if you put the code above/below $home[rightblocks] or $home[leftblocks] you can put your shoutbox in the left or right columns
Hope this helps!