I'm still missing something. I can pull the cookie out of the response header easily enough:
my $CookieHeader = $response->header('Set-Cookie');

But I'm not sure how to pass that back to the browser. Right now I send the response back like so:

    if ($response->is_redirect)
        {        
        print $cgi->redirect(-uri=>$response->header('Location'),
                          -status=>$response->code
                          );
        }
    else
        {
        print $cgi->header($ResponseContentType);
        print $response->content;
                }
[download]

I guess I'm not sure how to use CGI to invoke Set-Cookie. I know it has a -cookie option, but I don't have a CGI cookie object, so I don't think that will work...redirect(-uri=