[support] CCK teaser template 'Add to cart' - button

Hello there, I am having yet another problem with CCK teaser layout. I am using Drupal 5.x, CCK module and Contemplate module. I would like to add an 'Add to cart'-button to the teasers of one of my CCK content types. In the body template, by writing <div><?php print $node->content['cart']['#value'] ?></div> I see a little field for inputting the 'Quantity', and then a button 'Add to cart'. If I do the same to the teaser template, it doesn't display anything. Any help? In the end, I would like to display an 'Add to cart'-button only, with the quantity autonmatically set to '1'. Any suggestions? Help much appreciated as always... Laura