Problems with WEB - can`t connect MSSQL

Help me someone i tried all Instructions, all in RageZone... I searched all information about this connection, but my Web ( I tried about 10 Web Files, and 3 web Servers ) cannot connect to my MSSQL database!:closedeyes::mellow:
1. People can`t register throw the Web
2. There is no information about server
I very need working code, because all the time Errors in the WEB are shown in the connect command lines, like this:

1) $conn = mssql_connect($config['host'], $config['user'], $config['pass']);
$sel = mssql_select_db($config['base']);

2) $conn = mssql_connect($mssql_host, $mssql_user, $mssql_pass);
mssql_select_db($mssql_database);

Please help me, i hope someone will help me Quickly! No flood please, only HELP :blushing: