in FORUMHOME template, make sure your guess message & logged in user info are in conditional as following:
HTML Code:
<thead>
<if condition="$show['guest']">
<!-- guest welcome message -->
<tr>
<td class="tcat" colspan="<if condition="$vboptions['showmoderatorcolumn']">6<else />5</if>"><phrase 1="$vboptions[bbtitle]">$vbphrase[welcome_to_the_x]</phrase></td>
</tr>
<tr>
<td class="alt1" colspan="<if condition="$vboptions['showmoderatorcolumn']">6<else />5</if>">
<phrase 1="faq.php?$session[sessionurl]" 2="register.php?$session[sessionurl]">$vbphrase[first_visit_message]</phrase>
</td>
</tr>
<!-- / guest welcome message -->
</if>
</thead>