[Zachery]

Its because youve inserted a whole table inside of a table with out the proper tags.

try this

<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> 
<if condition="$bbuserinfo[posts]<1 && !$show['guest'] && !is_member_of($bbuserinfo, 3)"> 
<br /> 
<!-- ############## NEVER POSTED MESSAGE ##############  --> 
  <tr> 
   <td class="alt1" align="left"><p style="color: red;"> 
   Hello $bbuserinfo[username],<br>Why not make your first post today by saying hello to the crew in our <a href="http://www.zookpower.ca/forums/forumdisplay.php?f=1">Welcome to Zookpower</a> forum! 
   </p></td> 
  </tr> 
<!-- ############## END NEVER POSTED MESSAGE ##############  --> 
</if>