SQL Server version 6.5 implements some features not present in SQL Server 6.0. Some of these features require ODBC drivers to connect with the client application. Make sure that your client computer (where Microsoft Access is running) has the most recent version, or at least the version corresponding to your server, of the SQL Server ODBC driver. Look for Sqlsrvr.dll for 16-bit clients and Sqlsrv32.dll for 32-bit clients.