How do I attach arbitrary links to thumbnails created using CCK and Views?

I followed this popular tutorial http://drupal.org/node/144725 on creating galleries with CCK and views, and now I have several galleries that I would like to link to from a page of thumbnails in a grid that resembles the galleries generated using the CCK, Views and grids from Views Bonus Pack.

Basically, I'd like a grid of thumbnails that when one is clicked, I go to that gallery.

The thing I haven't figured out yet is how do I set the thumbnail to link to an arbitrary node or URL instead of linking to the original photo?

I tried making another Thumbnail content type with Image and Link fields, but the closest I could get was having the link written out above the thumbnail. It seems like there ought to be a way to add some PHP to override the thumbnail's link with the data in the link field.

Here is my view if it helps:

  $view = new stdClass();
  $view->name = 'Gallery';
  $view->description = 'Gallery';
  $view->access = array (
);
  $view->view_args_php = '';
  $view->page = TRUE;
  $view->page_title = 'Photo Galleries';
  $view->page_header = 'Below are thumbnail links to the various galleries.';
  $view->page_header_format = '1';
  $view->page_footer = '';
  $view->page_footer_format = '1';
  $view->page_empty = '';
  $view->page_empty_format = '1';
  $view->page_type = 'bonus_grid';
  $view->url = 'gallery';
  $view->use_pager = TRUE;
  $view->nodes_per_page = '12';
  $view->sort = array (
  );
  $view->argument = array (
  );
  $view->field = array (
    array (
      'tablename' => 'node',
      'field' => 'title',
      'label' => '',
      'handler' => 'views_handler_field_nodelink',
      'options' => 'nolink',
    ),
    array (
      'tablename' => 'node_data_field_gallery_images',
      'field' => 'field_gallery_images_fid',
      'label' => '',
      'handler' => 'content_views_field_handler_ungroup',
      'options' => 'Square_Thumbnail_linked',
    ),
  );
  $view->filter = array (
    array (
      'tablename' => 'node',
      'field' => 'status',
      'operator' => '=',
      'options' => '',
      'value' => '1',
    ),
    array (
      'tablename' => 'node',
      'field' => 'type',
      'operator' => 'OR',
      'options' => '',
      'value' => array (
  0 => 'gallery_thumbnail',
),
    ),
  );
  $view->exposed_filter = array (
  );
  $view->requires = array(node, node_data_field_gallery_images);
  $views[$view->name] = $view;

Thanks, Chris