Hello, I got the following error message when calling a stored procedure on MSSQL 2000 server: "Heterogeneous queries require the ANSI_NULLS and ANSI_WARNINGS options to be set for the connection. This ensures consistent query semantics. Enable these options and then reissue your query. [20018] (severity 5)". How can I set ANSI_NULLS and ANSI_WARNINGS on when open connections to the MSSQL 2000 server. I use both mssql_connect and PDO. Thank you. Phuoc Diec