mod_rewrite and CodeIgniter question

[eluser]ChrisF79[/eluser]
[quote author="WanWizard" date="1284335754"]Something like

Code:

// route all combinations of alphanumeric/numeric:
$route['(:any)/(:num)'] = 'property/index/$1/$2';

// route Naples-Real-Estate to the naples method
$route['Naples-Real-Estate/(:num)'] = 'property/naples/$1';

[/quote]
I tried adding your suggestion to my routes.php file. I have the url helper autoloaded in the autoload file. However, when I then try to visit http://localhost:8888/ci/Naples-Real-Estate/20292846/ I'm getting a not found error. It says:
The requested URL /ci/Naples-Real-Estate/20292846/ was not found on this server.