I have php installed on my workstation here at work using XAMPP. I need to connect to the main server ARSQL and run a query every hour to synch up some data. I copied the file to where it belongs and uncommented the line in the php.ini. when i try to connect i get:

Warning: mssql_connect() [function.mssql-connect]: Unable to connect to server: in C:\Program Files\xampp\htdocs\testmssql.php on line 4

my code is

$conn = mssql_connect("ARSQL", "snewell", "mypass");

Can anyone tell me what the problem is? i really need this asap. Thanks