Keyword in urls of PHPBB

Hi,

Here is what you are looking for:
http://www.phpbbhacks.com/download/4702


I'm using Able2know's mod_rewrite on my phpbb forums. All viewtopic pages looks like html pages with the same word in the URL and all these pages are indexed by google. Now I've found this new mod_rewrite mod which turn URLs into keyword phrases, such as the topic and forum titles. I think this is a great way for SEO.

So, if a replace it with this new mod, all pages indexed by google will be not accessable anymore. Does anybody have a solution for this?

Leave the rewriterules in the htaccess.
The links wil still work then.