Can it work with the views_attach module?

Yes, I tried adding it to the module's print.tpl.php file, and also tried it adding this before it, as suggested in your documentation:

$node = $print['node'];

I also tried to create a print.node-type.tpl.php in the theme directory, using my code from the Content Template that prints the view. This is what I'd prefer since it's only the one node type that uses the attached view. I tried clearing Drupal's cached data and going to the theme config page, but this didn't change the PF page either - still no attached view.

Here is what my print.tpl.php (in the module's directory) now looks like:

<?php
// $Id: print.tpl.php,v 1.8.2.15 2009/07/09 12:00:52 jcnventura Exp $

/**
 * @file
 * Default print module template
 *
 * @ingroup print
 */
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="<?php print $print['language']; ?>" xml:lang="<?php print $print['language']; ?>"
>
  <head>
    <?php print $print['head']; ?>
    <title><?php print $print['title']; ?></title>
    <?php print $print['scripts']; ?>
    <?php print $print['robots_meta']; ?>
    <?php print $print['base_href']; ?>
    <?php print $print['favicon']; ?>
    <?php print $print['css']; ?>
  </head>
  <body<?php print $print['sendtoprinter']; ?>>
    <?php if (!empty($print['message'])) {
      print '<div class="print-message">'. $print['message'] .'</div><p />';
    } ?>
    <div class="print-logo"><?php print $print['logo']; ?></div>
    <div class="print-site_name"><?php print $print['site_name']; ?></div>
    <p />
    <div class="print-breadcrumb"><?php print $print['breadcrumb']; ?></div>
    <hr class="print-hr" />
    <h1 class="print-title"><?php print $print['title']; ?></h1>
    <div class="print-submitted"><?php print $print['submitted']; ?></div>
    <div class="print-created"><?php print $print['created']; ?></div>
    <div class="print-content"><?php print $print['content']; ?></div>
<?php
$node = $print['node'];
?>
<div class="print_content"><?php print $node->content['attachedviewname_node_content_1']['#value']; ?></div>
    <div class="print-taxonomy"><?php print $print['taxonomy']; ?></div>
    <div class="print-footer"><?php print $print['footer_message']; ?></div>
    <hr class="print-hr" />
    <div class="print-source_url"><?php print $print['source_url']; ?></div>
    <div class="print-links"><?php print $print['pfp_links']; ?></div>
  </body>
</html>

(also, I clicked the wrong version first time, sorry...I'm using version 6.x-1.10.)

Thanks again for your help!

So...should the above have worked, or am I doing something wrong?