What is this solution to this localhost error?

I'm trying to install a script. New to this, actually.
This error keeps coming up.
Parse error: syntax error, unexpected T_STRING in /home/myusername/public_html/newscript/conn.php on line 2

This is my conn.php file. What am I doing wrong? Thanks.
<?php
MySQL® Database Wizard

//enter your MySQL database host name, often it is not necessary to edit this line
$db_host = "localhost";

 

Comment out the 2nd line with "//":

<?php
//MySQL® Database Wizard

//enter your MySQL database host name, often it is not necessary to edit this line
$db_host = "localhost"; 

Code (markup):

 

Thanks...Please say it in plain English. I'm a complete lefthanded noob. Kindly explain or copy and paste here what you mean..sorry I'm totally new to this. Willing to learn.

//enter your MySQL database host name, often it is not necessary to edit this line
$db_host = "localhost";

 

Put "//" in front of the 2nd line, which contains "MySQL® Database Wizard". This is just text, not actual code, so we need to tell PHP not to process it by adding "//" in front of it.