A ver si te funciona así...
Código:
<table border="0" cellspacing="{$theme['borderwidth']}" cellpadding="{$theme['tablespace']}" class="tborder" align="center">
<tr>
<td class="trow1" width="100%"><navigation></td>
<td class="trow2" nowrap="nowrap" style="padding:6px; font-size:11px">
{$lang->welcome_back}<br />
{$lang->welcome_current_time}<br />
<a href="{$mybb->settings['bburl']}/private.php">{$lang->welcome_pms}</a> {$lang->welcome_pms_usage}<!-- ProfileComments --> | <a href="{$mybb->settings['bburl']}/member.php?action=profile&uid={$mybb->user['uid']}" title="{$lang->profile_comments}">{$lang->profile_comments_new_inmenu}</a> {$lang->profile_comments_new_inmenu_count}<!-- /ProfileComments -->
</td>
</tr>
<tr>
<td colspan="2">
<table>
<tr align="center" class="thead">
<td class="welcome"><a href="{$mybb->settings['bburl']}/usercp.php"><b>{$lang->welcome_usercp}</b></a></td>
<td class="welcome"><a href="{$mybb->settings['bburl']}/modcp.php"><b>{$modcplink}</b></a></td>
<td class="welcome"><a href="{$mybb->settings['bburl']}/admincp.php"><b>{$admincplink}</b></a></td>
<td class="welcome"><a href="#" onclick="MyBB.popupWindow('{$mybb->settings['bburl']}/misc.php?action=buddypopup', 'buddyList', 200, 300);"><b>{$lang->welcome_open_buddy_list}</b></a></td>
<td class="welcome"><a href="{$mybb->settings['bburl']}/misc.php?action=help"><b>{$lang->toplinks_help}</b></a></td>
<td class="welcome"><a href="{$mybb->settings['bburl']}/calendar.php"><b>{$lang->toplinks_calendar}</b></a></td>
<td class="welcome"><a href="search.php?action=getnew"><b>{$lang->welcome_newposts}</b></a></td>
<td class="welcome"><a href="$settings[bburl]/search.php"><b>{$lang->toplinks_search}</b></a></td>
<td class="welcome"><a href="{$mybb->settings['bburl']}/member.php?action=logout&logoutkey={$mybb->user['logoutkey']}"><b>{$lang->welcome_logout}</b></a></td>
</tr>
</table>
</td>
</tr>
</table>