Importing PHP Into Flash Help Please

I was following this tutorial ( http://kirupa.com/developer/actionscript/flash_php_mysql.htm ) and I didnt change anything and I get this error:

Error opening URL

But I checked and double checked the file name and URL and they are correct and I also checked the PHP file and variables and they are right. Can anyone offer another way to importing information from a PHP file? Please and thank you in advance.

<3 KirupaForums