could not connect mysql5 from php5

[zxcse2010]

Hi,
Developers i am a software analyst from bangladesh,i faced a new problem of connecting.I could not connect mysql 5/mysql 4.01 alpha from php 5 version over apache2 web server on windows 2000 professional sp-4.
I wrote following code for connecting :
code is:
<?php
echo ('<p> This is a test! </p>');

$dbcnx = @mysql_connect('localhost', 'root', 'root');

if (!$dbcnx) {
echo( '<p>Unable to connect to the ' .
'database server at this time.</p>' );
}

// Select the jokes database
if (! @mysql_select_db('test') ) {
die( '<p>Unable to locate the test ' .
'database at this time.</p>' );
}
?>
---------------- i think above code is correct but connection was not established above source.please healp me as soon as possible.