Unable to theme CCK content type

First, apologies if this should have been logged against CCK ...

I am using Drupal 6.4 / PHP 5.2.6 / MySQL 5.0.67

I am trying to theme a CCK input form called "front_page". So, first I copied garland theme into my all\themes folder and renamed it myGarland. Then, in template.php, I had the following functions:

function myGarland_theme() {
	return array(
		'contact_mail_page' => array(
			'arguments' => array('form' => NULL),
			//'template' => 'contact-mail-page',
		),
	);
	return array(
		'front_page_node_form' => array(
			'arguments' => array('form' => NULL),
			//'template' => 'front-page-node-form',
		),
	);
}
function myGarland_front_page_node_form($form) {
	$form['title']['#title'] = t('My title');
	$form['title']['#value'] = t('My value');

	$output = drupal_render($form['title']);
	return $output . drupal_render($form);

	return drupal_render($form);
}

That didn't work - so I tried leaving the //'template' => 'front-page-node-form', line uncommented and added a preprocess function as below:

function myGarland_preprocess_front_page_node_form(&$vars) {

	$vars['form']['title']['#title'] = t('My title');
	$vars['my_form'] = drupal_render($vars['form']);

}

And in my template file (filename: front-page-node-form.tpl.php from form_id), I've got:

<p>Theming cck forms ...</p>
<?php print $my_form; ?>

Didn't work either. I've gone through tutorials on the following pages (my thanks to the writers): http://drupal.org/theme-guide, http://blip.tv/file/1139104, http://blip.tv/file/1139210/ and http://11heavens.com/theming-the-contact-form-in-Drupal-6. In no particular order, found the information on all of these very useful and was able to theme the contact form following the steps from the tutorials, and that worked fine. Can anyone help please?

... and thanks

dantina.