Editing thumbnails.php

[rocks]

Hi!
I Need to display the images in thumbnail.php file,one below the another & display image information next to the image, which is fetched from the database(pictures table).
  I copied the $template_thumbnail_view function from the samples/theme.php file to classic/theme.php & changed the <td> class to "list" from "thumbnails".But this just removed the tables in which the pictures were displayed.How to display images one below the another,& how to obtain the Picture ID (pid) of the image, so that it can be used to query the database & display information next to the image.

Please help