Build a CI application alongside EE 2 installation

[eluser]Scott Boyde[/eluser]
If it was possible I didn't want to change the structure of the url to have either

http://www.nifootball.co.uk/stats.php/league/viewleague/nafl.html
or
http://www.nifootball.co.uk/stats/league/viewleague/nafl.html

But try and keep it as is now
http://www.nifootball.co.uk/league/viewleague/nafl.html

I thought that if I used routes I could do something like

$route['league/viewleague/([a-z0-9-_]+)'] = "stats.php/league/viewleague/$1";

Maybe the htaccess could add this in some way.