Since Drupal 7 the CCK module is for a large part integrated into the Drupal core. You can very easily create and add new fields to a certain node type. One of the available field types is “field_image”. You can set the setting that multiple images are allowed.
If you create a view that displays all the node teasers, the images will be visible there. That all images are appended is nice, but actually only for the full node and not the teaser. So if you only want one image to show in the teaser you have to override the More >