I'm a recent convert to HTML::Template and I think it may be of use here.

For a loop it needs an array of hash refs.

$sth = $dbh->prepare( 'SELECT * FROM guestbook' );
$sth->execute;

my @ht_data;
while( $row = $sth->fetchrow_hashref ){
 push @ht_data, $row;
}

my $template = HTML::Template->new(filename => 'table.tmpl');
$template->param(TABLE_LOOP => \@ht_data);
print $template->output();
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In your template the loop would look something like this

<table class="user_form">
  <TMPL_LOOP NAME=TABLE_LOOP>
    <tr>
      <td width="25%" class="name" >
        <TMPL_VAR NAME=NAME >
      </td>
      <td width="50%" class="email">
        <TMPL_VAR NAME=EMAIL>
      </td>
      <td width="25%" class="date" >
        <TMPL_VAR NAME=DATE >
      </td>
    </tr>
    <tr>
      <td class="host">
        Ευχή του Ιησού
      </td>
      <td class="tip" colspan="2">
        <TMPL_VAR NAME=PRAY>
      </td>
    </tr>
    <tr>
      <td class="tip">
        <TMPL_VAR NAME=NAME>
      </td>
      <td class="remark" colspan="2">
        Προσωπική Ορθοδοξοπνευματική Εμπειρία
      </td>
      <td width="25%" class="date">
        <TMPL_VAR NAME=DATE>
      </td>
    </tr>
  </TMPL_LOOP>
</table>
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Untested. I don't have access to SQL. Hope this helps.