url rewriting vs routing

[eluser]mr_prasanna[/eluser]
Ok, I had some luck with

$route['(:any)/(:any)'] = "product/info/$1/$2";

But, for some reason the page title was 404 page not found. Content was fine.

Also, for first (:any) I think I need a regex that gets me any string except (cart|product|account|auth). Please help if you can.