MySQL connection error

[Eric]

Hi All,
I am a MySQL newbie.
Using MySQL server config wizard, I created a database 'polls' and set passwd as 'admin'. I used the following PHP code to connect this db:

$host = "localhost:3036";
$user = "polls";
$pass = "admin";

$conn = mysql_connect($host, $user, $pass) or die ("Unable to connect!");
mysql_select_db($user) or die ("Unable to select database!");

and I got the following error:

Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'polls'@'localhost' (using password: YES) in C:\Server\Apache2 htdocs\Polls\user.php on line 17
Unable to connect!

Anyone could help to tell me why please? and BTW, what is the difference between the user name and db name? when I try to connect the db from DOS, it just prompted for password only, not username. Many thanks.