http://www.magentocommerce.com/extension/1826/mxperts--noregion
/var/www/pear install magento-community/Mxperts_NoRegion

Disable telephone as required in customer/address
<?php
$URL="http://" . $_SERVER['SERVER_NAME'] . "/sites/default/files/magento/customer_address/edit.phtml.diff";

echo "<div><pre>";
</pre></div>

$c = curl_init();
curl_setopt($c, CURLOPT_URL, $URL);

echo htmlspecialchars(curl_exec($c));

curl_close($c);

echo "";

?>

Links
http://www.magentocommerce.com/boards/viewthread/9081/P45/