Php4 Sessions

Hi to all. I have downloaded the latest windows distribution of PHP4 (php-4_0_1pl2-Win32.zip) and installed on my system running PWS 4.0 on Windows 98. I am using the php.ini-optimized file as php.ini. I have enabled session support in php.ini On using the session functions session_start() and session_register() I get the following warnings: Warning: open(/tmp/sess_c0a8b246661b4e8cb35314738d13cd2e, O_RDWR) failed: m (2) in C:\Inetpub\Phpfiles\count_me.php on line 5 Warning: Cannot send session cache limiter - headers already sent by (output started at C:\Inetpub\Phpfiles\count_me.php:4) in C:\Inetpub\Phpfiles\count_me.php on line 5 Warning: Failed to write session data. Please check that the current setting of session.save_path is correct (/tmp) in Unknown on line 0 I have enabled cookies on my browser. But still these warnings exist. Also, the session.save_path has been set to /tmp and my TMP and TEMP variable points to C:\Windows\Temp. Can you send me any information about this. Thank You. Best Regards Kiran B G