Moving the software from the document root of your website to a sub-directory is simple. The first step is to pick a sub-directory name, taking care to note that the sub-directory name gallery cannot be used in some circumstances.

The reason that the directory name gallery is reserved is so that Pixaria is able to support search engine friendly URL using Apache Mod_Rewrite. There is more information about this in the documentationtopic on search engine friendly URLs.

Assuming, you're either not using search engine friendly URLs or that you're willing to use a different sub-directory name such as 'galleries', 'library', 'archive' etc. then the process for moving the installation is simple. Simply use your preferred FTP client to move all the Pixaria files into the new directory and then edit the config file for (pixaria.config.php) to add the directory name to the site URL e.g:

$cfg['sys']['base_url'] = "http://www.supersportsphoto.com/";

Becomes:

$cfg['sys']['base_url'] = "http://www.supersportsphoto.com/library/";

Note the trailing slash on the end of the base URL.

The process for moving the software out of a sub-directory and into the document root of your site is identical but in reverse.