Complex problem with the regions

Before Top Content I have the necessity to create eight new regions (4 in the first horizontal line and 4 in the second horizontal line).
I called these new high Regions_to:
alto_a
alto_b
alto_c
alto_d
alto_e
alto_f
alto_g
alto_h

I continued this procedure:
1. In zen_classic.info I addedd:

regions[left]           = left sidebar
regions[right]          = right sidebar
regions[navbar]         = navigation bar
regions[alto_a]         = alto_a
regions[alto_b]         = alto_b
regions[alto_c]         = alto_c
regions[alto_d]         = alto_d
regions[alto_a]         = alto_e
regions[alto_b]         = alto_f
regions[alto_c]         = alto_g
regions[alto_d]         = alto_h
regions[content_top]    = content top
regions[content_bottom] = content bottom
regions[header]         = header
regions[footer]         = footer
regions[closure_region] = closure

2. In page_tpl.php

........

<div id="container" class="clear-block">

      <?php if (!empty($left)): ?>
        <div id="sidebar-left" class="column sidebar">
          <?php print $left; ?>
        </div> <!-- /sidebar-left -->
      <?php endif; ?>

      <div id="main" class="column"><div id="squeeze" class="clear-block">
        <?php if (!empty($mission)): ?>
          <div id="mission"><?php print $mission; ?></div>
        <?php endif; ?>
        <?php if (!empty($content_top)): ?>

<!-- start alto ABCD -->
<table>
	<tr>
	<td>
		<?php if ($alto_a) { ?><td id="alto_a">
			<?php print $alto_a ?>
		</td><?php } ?>
		<?php if ($alto_b) { ?><td id="alto_b">
			<?php print $alto_b ?>
		</td><?php } ?>
                <?php if ($alto_c) { ?><td id="alto_c">
			<?php print $alto_c ?>
		</td><?php } ?>
                <?php if ($alto_d) { ?><td id="alto_d">
			<?php print $alto_d ?>
		</td><?php } ?>
                <?php if ($alto_e) { ?><td id="alto_e">
			<?php print $alto_e ?>
		</td><?php } ?>
		<?php if ($alto_f) { ?><td id="alto_f">
			<?php print $alto_f ?>
		</td><?php } ?>
                <?php if ($alto_g) { ?><td id="alto_g">
			<?php print $alto_g ?>
		</td><?php } ?>
                <?php if ($alto_h) { ?><td id="alto_h">
			<?php print $alto_h ?>
		</td><?php } ?>
	</tr>
</table>
<!-- end top content -->

          <div id="content-top"><?php print $content_top; ?></div>
        <?php endif; ?>
        <div id="content">
          <?php if (!empty($title)): ?>
            <h1 class="title"><?php print $title; ?></h1>
          <?php endif; ?>
          <?php if (!empty($tabs)): ?>
            <div class="tabs"><?php print $tabs; ?></div>
          <?php endif; ?>
          <?php print $help; ?>
          <?php print $messages; ?>
          <?php print $content; ?>
          <?php if (!empty($feed_icons)): ?>
            <div class="feed-icons"><?php print $feed_icons; ?></div>
          <?php endif; ?>
        </div> <!-- /content -->
        <?php if (!empty($content_bottom)): ?>
          <div id="content-bottom"><?php print $content_bottom; ?></div>
        <?php endif; ?>
      </div></div> <!-- /squeeze /main -->

      <?php if (!empty($right)): ?>
        <div id="sidebar-right" class="column sidebar">
          <?php print $right; ?>
        </div> <!-- /sidebar-right -->
      <?php endif; ?>

    </div> <!-- /container -->

    <div id="footer-wrapper">
      <div id="footer">
......

Resulted: it there is not the new regions. Someone it can help understand me how to do?