I created my own module called "cssswitch". I'm trying to create my own html layout to display the admin form portion of the module. I understand how to use the hook_form_alter() to modify form elements, but I need to create the entire form layout to make some fields appear next to each other. It seems I need something like the way I have the frontend view of the node displayed with theme_cssswitch_display(), but for the admin part of the node.

function cssswitch_form_alter(&$form, $form_state, $form_id) {

    switch($form_id) {  

        case 'cssswitch_node_form':
            $form['hour_start']['#prefix'] = '<div class="start-box">';
            $form['ampm_start']['#suffix'] = '</div>';
            $form['ampm_start']['#attributes'] = array("style" => "border-width:2px;");
            break;
    }

}

function cssswitch_theme() {

    return array(
      'cssswitch_display' => array(
        'arguments' => array('node'),
      ),

    );

}

// to display the view of the node
function theme_cssswitch_display($node) {

  $output = '<div class="cssswitch-cssfilename">Filename: '.
    check_plain($node->cssfilename). '</div>';
  $output .= '<div class="cssswitch-time_start">Start: '.
    check_plain($node->hour_start). ':'.check_plain($node->minute_start).' '.check_plain($node->ampm_start).'</div>';

  $output .= '<div class="cssswitch-time_end">End: '.
    check_plain($node->hour_end). ':'.check_plain($node->minute_end).' '.check_plain($node->ampm_end).'</div>';    

  return $output;
}

thanks for any help