How I can install any Grabber page

please any body tell me how i can fix this when i try to install any Grabber file such as fank or youtub
File i found this "Warning: require_once(../ incfiles/core.php)
[function.require-once]: failed to open stream: No such file or
directory in /home/a6670593/ public_html/sadam/youtube/
index.php on line 6"
My site url
http://xnokia.webuda.com/sadam/youtube/
This file i try to install it please any body edite this file i want install it in my site

Excuse me my friends
I speake english little