mssql and odbc functions

Hi All, Thanks for the advice on database connectivity. I've tried connecting to the mssql server (which is running 2000 not 6.5 as I had thought) with the mssql_connect function as well as the odbc_connect function. When I run the mssql connect I use this code: MSSQL_CONNECT($host,$user,$pass) The variables are all defined with the correct values, but I receive an error message: Fatal error: Call to undefined function: mssql_connect() in c:\inetpub\wwwroot\stpweb\test\mssql.php on line 7 I've looked through the PHP documentation and tried a couple of fixes for this error, but no luck so far. Also when I try to connect to the database using odbc connect and this code: odbc_connect("dsn","uid","pas"); I get this message: Warning: SQL error: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified, SQL state IM002 in SQLConnect I have the DSN defined as a system dsn, and it works when tested. I know I'm screwing something up, but I'm not sure what. Any help you could give would be appreciated. Regards, Martin