A domain, a couple sub-domain, & multiplte instances

[eluser]thinkigniter[/eluser]
<?php
In a single CI installation I would have multiple application folders e.g.

system\application\one
system\application\two
system\application\three


In your folders [ mydomain.com/one, mydomain.com/two ] I would have a Codeigniter index.php file that would have

Code:

$system_folder = "system";
$application_folder = "application/one";

And in the config.php for one/two/three applications I would have

Code:

$config['index_page'] = "/one/index.php";
or
$config['index_page'] = "\one\index.php";

I can NEVER remmeber.

Well I'd give it a go anyway.