if ($user) {
  $cgi->start_html;
  print "Content-Type: text/html\n\n";
  print "well HELLO";
  $cgi->end_html;
}
else {
  $cgi->start_html;
  print "Content-Type: text/html\n\n", $template->output;
  $cgi->end_html;
}

##</code><code>##

if ($user) {
   print $cgi->header,$cgi->start_html,"Hi there!",
         $cgi->end_html;
} else { 
     print $cgi->header,$cgi->start_html,
           $template->output,$cgi->end_html;
}