Problema com conexão MySQL... Dá pau!!

Dá o seguine erro:

Warning: mysql_connect(): Client does not support authentication protocol requested by server; consider upgrading MySQL client in C:\Arquivos de programas\Apache Group\Apache2\htdocs\index.php on line 2

index.php

<?php mysql_connect("localhost", "root", "senha"); mysql_select_db("ipb12");?>Um Abraço!!! http://forum.imasters.com.br/public/style_emoticons/default/joia.gif