How to use a Windows Login using PHP on SQL Server 2000

Is there a way through PHP to login using a Windows Login set in the SQL Server(such as the IUSR_XXXXXX account)?
My system administrator would rather use this instead of the "sa" account or others made in the SQL Server. Any suggestions? I am using the php_mssql.dll function accepted by php. Thanks in advance.

No, im pretty sure you cannot do this as the PHP module is abstracted from windows. PHP talks directly to the database and doesn't use Windows authentication, so you'll have to use a database login.

I don't see why you would want to use a system login, because a db login can be setup to be more secure and to enforce restrictions such as only to certain databases, etc...