PHP & MySQL no connection

I'm having a perplexing situation.

To start off,

MySQL Version:
URL

MySQL User:
URL

PHP Version:
URL

Connection Problem:
URL

PHP Code with error:
URL

It seems that PHP isn't connecting to MySQL. It's probably as simple as just a switch or setting. I'm new at this and just installed PHP. I know that the MySQL installation is good since our programmer is using .asp and has been using MySQL for about 2 months with no problems.

Any clue as to what I am doing wrong?

$cn=mysql_connect("","","")or die (mysql_error());
$db=mysql_select_db("")or die(mysql_error());

So I take it, that after establishing the connection with MySQL, it has to choose the db?

Make sure that the php mysql lib files are installed, i believe native support was remove in php5. I think it is called Mysqli, if your using Debian/Ubuntu or Redhat/Centos it should be in the default repositories (checked this on my servers). In the repos it should be called something like php5-mysql

It's on Windows XP Pro 64-bit.

I am beginning to think it's just the PHP connection to MySQL that's the headache.

I checked the /path via "environmental variables. Where does one get "Mysqli"?

Anyone??