How to use admin table theme with multistep form?
I assume you know how to do the multi-step form. For the table, you can use Drupal's table theme function. If the table contains only markup, you can do something like this:

$form['table'] = array(
  '#theme' =&gt; 'table',
  '#rows' =&gt; $rows,    
  '#empty' =&gt; 'Empty List - No Entries',
  '#header' =&gt; $header,
);


or 

$form['table'] = array ('#value' =&gt; theme('table', $headers, $rows));


You can use this in multistep form also.

If the table contains actual form elements (such as selects, textfields, etc.), you can wrap them in a form element that calls a theme function, like so:

$form['table'] = array ('#theme' =&gt; 'output_table');

$form['table']['element_1'] = array (...);
$form['table']['element_2'] = array (...);


Within 'theme_output_table', generate your $headers and $rows to feed to 'theme_table' by calling 'drupal_render' on the relevant form elements that are children of $form['table'].