CodeIgniter installation on Ubuntu 10.04

[eluser]Unknown[/eluser]
Hi there.

I am having trouble in installing CodeIgniter in my Ubuntu 10.04. I extracted the CodeIgniter-1.7.2.zip that I downloaded in this site to /var/www/training/codeigniter and it contains the following:

*index.php
*license.txt
*system (directory)
*user_guider (directory)

Now I try to run this on my browser url : 127.0.0.1/training/codeigniter, I assume that index.php will have to display but I simply get a blank screen. My LAMP is working fine, its just that it won't display anything under the codeigniter directory.

Any ideas, why?

Regards,

Dee