用的是win2000+apache2+php4.3.4+mysql


出现了下面的错误：
Warning: mysql_connect(): Client does not support authentication protocol requested by server; consider upgrading MySQL client in C:\Program Files\Apache Group\webroot\test.php on line 2
连接失败!
Warning: mysql_close(): supplied argument is not a valid MySQL-Link resource in C:\Program Files\Apache Group\webroot\test.php on line 7


程序代码如下：<?php
$connection=mysql_connect("localhost","root","sa");
if($connection)
echo "连接成功!";
else
echo "连接失败!";
mysql_close($connection);

?>
高手们帮偶看看是什么问题啊
是不是配置php的问题
还是mysql的权限问题
还是apach2e的配置问题