[Help]Creating CP Using Appache "Fatal Error"

what kind of error is this??

1st error in the webpage.

Fatal error: Call to undefined function mssql_connect() in C:\xampp\htdocs\ran\function.php on line [B]37

and this is the Thing that showed in Function.php

<?php
// Copyright (c) CiMed (cimed@yahoo.com)
function checkcookie($where, $cookieuser, $cookiepass, $dbname, $sqladdress, $sqluser, $sqlpass) {
connectdb($dbname,$sqladdress, $sqluser, $sqlpass);
if($where==0) {
$result = mssql_query(sprintf(SELECT_USER_PASS, $cookieuser));
$rows=mssql_num_rows($result);
if ($rows>0) {
$rows=mssql_fetch_assoc($result);
extract($rows);
$password = ($UserPass);
if ($password == $cookiepass) {
quickrefresh('home.php');
} else {
resetcookies();
}
} else {
resetcookies();
}
} elseif($where==1) {
$result = mssql_query(sprintf(SELECT_USER_PASS, $cookieuser));
$rows=mssql_num_rows($result);
if ($rows>0) {
$rows=mssql_fetch_assoc($result);
extract($rows);
$password = ($UserPass);
if($password != $cookiepass) {
notloggedin();
}
} else {
notloggedin();
}
}
}

function connectdb($db, $dbaddress, $dbuser, $dbpass) {
$dbconnect = mssql_connect ($dbaddress, $dbuser, $dbpass);
mssql_select_db ($db, $dbconnect) or die (mysql_error());
}

function getmicrotime() {
list($usec, $sec) = explode(" ", microtime());
return ((float)$usec + (float)$sec);
}

function delayedrefresh($page) {
echo "<meta http-equiv='refresh' content='3; URL={$page}'>";
}

function echoindex($part) {
if($part=='credits') {
echo '
<tr valign="top">
<td width="100%" align="center">
<table width="703" border="0" cellpadding="0">
<tr>
<td width="700" height="15" background="img/header.gif" class="header">
<center>
</center>
</td>
</tr>
<tr>
<td style="border-left:1px solid black;border-right:1px solid black;" class="normal">
<div style="margin: 10px;" align="center">Copyright

You don't have to post it like this buddy, i guess your missing something. Have you put this ntwdblib.dll in this following addresses?

* C:\xammp\php\
* C:\xammp\Apache2\bin\
* C:\windows\system32\

And if it is not then download this ntwdblib.dll Here

I did that already..SoRRy For the..Copy and paste thing.