old guy newbie needs some help

While I realize this is elementary to most of you, I am just getting started with php, moving from coldfusion :) I am currently reading through the chapter on sessions and running into a little issue that after making many changes to my php.ini file, I continue to get the following errors while running this: <?php session_start(); echo "<p>Your session ID is ".session_id()."</p>"; ?> Errors: Warning: session_start(): open(/tmp\sess_ff8651f382492ae56f436690d81ff124, O_RDWR) failed: No such file or directory (2) in c:\inetpub\wwwroot\phptest\listing10.1.php on line 15 Warning: session_start(): Cannot send session cookie - headers already sent by (output started at c:\inetpub\wwwroot\phptest\listing10.1.php:13) in c:\inetpub\wwwroot\phptest\listing10.1.php on line 15 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at c:\inetpub\wwwroot\phptest\listing10.1.php:13) in c:\inetpub\wwwroot\phptest\listing10.1.php on line 15 Your session ID is ff8651f382492ae56f436690d81ff124 Warning: Unknown(): open(/tmp\sess_ff8651f382492ae56f436690d81ff124, O_RDWR) failed: No such file or directory (2) in Unknown on line 0 Warning: Unknown(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0 sorry this is so elementary but have to start somewhere, I am running php 4 on a win2k box w/IIS5. Though this does return a session id it's obviously not persistent on reload, an example of a session.save_path on a windows box would be great TIA just another old guy trying to learn new stuff.