ntwdblib.dll not found in any of the 5.2.8 zip files

ntwdblib.dll proves to be necessary...otherwise I'll get a mssql_connect not found

I used the ntwdblib.dll file from a 5.2.6 zip file

I completely reinstalled XP Prof SP3 along with MS SQL Server 2008 and I still get the following error:

Warning: mssql_connect() [function.mssql-connect]: Unable to connect to server: .\SQLEXPRESSLMKIII in C:\Inetpub\wwwroot\trymssql.php on line 8

Fatal error: Maximum execution time of 30 seconds exceeded in C:\Inetpub\wwwroot\trymssql.php on line 8

<?php
// Server in the this format: <computer>\<instance name> or 
// <server>,<port> when using a non default port number
$server = "LANDON\SQLEXPRESSLMKIII";
//$server = '(local)';
//$server = '.\SQLEXPRESSLMKIII';
$link = mssql_connect($server, "sa", "x0x0x0x");
//$link = mssql_connect($server);

if(!$link)
{
    die('Something went wrong while connecting to MSSQL');
}
?>

I've looked at all the options/permissions I can find.