php error - user profile shows blank page when tryng to make a new user template.

I recently installed Drupal on my website to promote my designs. I would like to have user accounts but currently can't.

If you take a look at: http://www.ravenriotdesigns.com/users/ravenriotdesigns, you will notice NOTHING is there.

What i tried to do was put this code in "template.php" in my theme folder..

/**
* Catch the theme_user_profile function, and redirect through the template api
*/
function phptemplate_user_profile($account, $fields = array()) {
  // Pass to phptemplate, including translating the parameters to an associative array. The element names are the names that the variables
  // will be assigned within your template.
  /* potential need for other code to extract field info */
  return _phptemplate_callback('user_profile', array('account' => $account, 'fields' => $fields));
  }

and now everything is blank. I followed everything on http://drupal.org/node/35728. no luck

i am running Drupal 6.

Please help.