[frreelz]

http://frreelz.co.cc

Can some one tell me why this is happening?

[Ikuto]

URL file-access is disabled in the server configuration

Pretty much explains everything.

Failed opening 'http://frreelz.co.cc/header.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php')

Explains everything.

Instead of including 'http://frreelz.co.cc/header.php' include 'header.php'.
Same with all other files.

[frreelz]

Can I enable it so i can use the full address?

[Ikuto]

I dont know, i'd simply recommend you to cut off all those http://frreelz.co.cc/ prefixes to the filenames. Oh wait i see you already done it. Good job :P