php headers already sent error.

Im SO CLOSE! Welll to start I had everything running FINE (MySQL, Apache, and PHP) until I installed STUPID Zend Studio for PHP. After their 30 day trial expired, I uninstalled it and everything just went downhill. After re installing everything, I have these errors left over. Now the code is already on production server running (but with Linux). Im on a win2K box (dont laugh)- BUT before it worked. I have no idea what this means since Im new to apache and PHP installs. Thanks for any help in for what to check Notice: Constant false already defined in c:\www\html\defines.php on line 4 Notice: Constant true already defined in c:\www\html\defines.php on line 5 Warning: Cannot add header information - headers already sent by (output started at c:\www\html\defines.php:4) in c:\www\html\index.php on line 9 Warning: Cannot send session cookie - headers already sent by (output started at c:\www\html\defines.php:4) in c:\www\html\index.php on line 89 Warning: Cannot send session cache limiter - headers already sent (output started at c:\www\html\defines.php:4) in c:\www\html\index.php on line 89 Chris