Pls help:

Warning: require(connect_to_mysql.php) [function.require]: failed to open stream: No such file or directory in C:\wamp\www\chibenda\root_directory\index.php on line 3


$db_host = "localhost"; 
// Place the username for the MySQL database here 
$db_username = "root";  
// Place the password for the MySQL database here 
$db_pass = "";  
// Place the name for the MySQL database here 
$db_name = "chibenda"; 

// Run the connection here  
mysql_connect("$db_host","$db_username","$db_pass") or die ("could not connect to mysql"); 
mysql_select_db("$db_name") or die ("no database");              


require "connect_to_mysql.php";

// Build Main Navigation menu and gather page data here
$sqlCommand="SELECT id,linklabel FROM pages ORDER BY pageorder ASC";
$query=mysqli_query($myConnection,$sqlCommand)or die(mysqli_error());


	$menuDisplay='<a href="index.php?pid='  . $id . '">Home</a><br/>';


REQUIRE "connect_to_mysql.php";
means you must have a file of that name, which will then contain your connection details.

So, is the opening bit of PHP code you give saved in a file called connect_to_mysql.php and in the same folder as the other file that uses it?