PHP4 ODBC problems

I just installed PHP4 yesterday and I tried to switch over my PHP3 stuff but I'm getting a strange ODBC problem. I have a WebDB class that encapsulates my database functions. In my exec() function I have: if (!($rs = odbc_exec($this->db, $sql))) { errorMessage("Database Error! "); return 0; } Earlier on, in my connect() function, I have: $this->db = odbc_connect($this->dsn,$this->user,$this->pass) || die("Unable to Connect to Database as $this->user "); This works perfectly fine with PHP 3.0.11 but with PHP4 I get: Warning: Supplied argument is not a valid ODBC-Link resource in webdb.inc on line 48 refering to the odbc_exec() call in my exec() function. I'm running PHP4 ISAPI with the Optimizer on NT4/IIS4. Has anyone encountered similar problems? Yr help is greatly appreciated! Adham __________________________________________________ Do You Yahoo!? Kick off your party with Yahoo! Invites. http://invites.yahoo.com/