I'm trying to install the newest Drupal to use it as test server in my Ubuntu 12.10 computer. I found this guide, but I got a problem. Everything went fine until I tried to open page http://localhost/drupal7/install.php. I got the following error message:
The requested URL /drupal7/install.php was not found on this server.
If I try to open the file from File Manager, Firefox tries to open the file with itself, but it again tries to open PHP file with itself. This continues forever. What should I do?