[PHP-WIN] PDFlib on PHP4

I'm getting this message Warning: Cannot add header information - headers already sent by (output started at c:\program files\apache group\apache\htdocs\test\pdftest.php:2) in c:\program files\apache group\apache\htdocs\test\pdftest.php on line 3 Warning: Cannot add header information - headers

[PHP-WIN] PHP works on the server only

I install PHP on my Win2K server with SP2. When I browse to the page with phpinfo() to test the installation it works fine. I use the IP address since you have to got through the server so the PHP is parsed so it should be connecting as a normal internet user. However, when looking at the page