Hey Joseph,
I've ran through the Extension Development book and have run into an issue with Joomla! 1.5. When creating components, I can not seem to get the publish/unpublish icon to function as intended and was wondering if you had a solution or any tips. Here is my display function:

function showKinesisAvailable($option, &$rows)
{
echo '<form action="index.php" method="post" name="adminForm">';
echo '<table class="adminlist">';

echo '<thead>';
echo '<tr>';

echo '<th width="20">';
echo '<input type="checkbox" name="toggle" value="" onclick="checkAll('.count($rows).';" />';
echo '</th>';

echo '<th class="title">Name</th>';
echo '<th width="20%" nowrap="nowrap">Page title</th>';
echo '<th width="5%" nowrap="nowrap">Published</th>';

echo '</tr>';
echo '</thead>';

jimport('joomla.filter.output';
$k = 0;
$i = 0;
$n=count($rows);
while($i < $n)
{
$row = $rows[$i];
$checked = JHTML::_('grid.id',$i,$row->id);
$published = JHTML::_('grid.published',$row,$i);
$link = JFilterOutput::ampReplace('index.php?option='.$option.'&task=edit&cid[]=&#039;.$row-&gt;id);
echo &#039;&lt;tr class=&quot;row&quot;&#039;.$k.&#039;&quot;&gt;&#039;;
echo &#039;&lt;td&gt;&#039;;
echo $checked;
echo &#039;&lt;/td&gt;&#039;;

echo &#039;&lt;td&gt;&#039;;
echo &#039;&lt;a href=&quot;&#039;.$link.&#039;&quot;&gt;&#039;;
echo $row-&gt;name;
echo &#039;&lt;/a&gt;&#039;;
echo &#039;&lt;/td&gt;&#039;;

echo &#039;&lt;td&gt;&#039;;
echo $row-&gt;title;
echo &#039;&lt;/td&gt;&#039;;

echo &#039;&lt;td align=&quot;center&quot;&gt;&#039;;
echo $published;
echo &#039;&lt;/td&gt;&#039;;

echo &#039;&lt;/tr&gt;&#039;;

$k = 1 - $k;
$i++;
}

echo &#039;&lt;/table&gt;&#039;;
echo &#039;&lt;input type=&quot;hidden&quot; name=&quot;option&quot; value=&quot;&#039;.$option.&#039;&quot; /&gt;&#039;;
echo &#039;&lt;input type=&quot;hidden&quot; name=&quot;task&quot; value=&quot;&quot; /&gt;&#039;;
echo &#039;&lt;input type=&quot;hidden&quot; name=&quot;boxchecked&quot; value=&quot;0&quot; /&gt;&#039;;

echo &#039;&lt;/form&gt;&#039;;
}

I had to change JOutputFilter to JFilt;
$checked = JHTML::_('grid.id',$i,$row->id);
$published = JHTML::_('grid.published',$row,$i);
$link = JFilterOutput::ampReplace('index.php?option='.$option.'&task=edit&cid[]='.$row->id);
echo '<tr class="row"'.$k.'">';
echo '<td>';
echo $checked;
echo '</td>';

echo '<td>';
echo '<a href="'.$link.'">';
echo $row->name;
echo '</a>';
echo '</td>';

echo '<td>';
echo $row->title;
echo '</td>';

echo '<td align="center">';
echo $published;
echo '</td>';

echo '</tr>';

$k = 1 - $k;
$i++;
}

echo '</table>';
echo '<input type="hidden" name="option" value="'.$option.'" />';
echo '<input type="hidden" name="task" value="" />';
echo '<input type="hidden" name="boxchecked" value="0" />';

echo '</form>';
}

I had to change JOutputFilter to JFilterOutput in order to find the class. Other than that, I couldn't really find any thing glaring in the differences between the code and book. Any help/tips would be appreciated. Thanks!