Is this the one that creates static html files? i don't think you really want to do this for search engines, there are better ways.

The easyiest way can be found at sitepoint forums. It basically makes it so that www.domain.com/forums/showthread.php/4323 is converted to

http://www.domain.com/forums/showthr...?threadid=4323 and search engines do index the former.

Another option is to use an apache re-write. This can be found in the chit chat forum in a thread started by me on apache rewrite. The code you want is the bit posted by fastfoward.

Alternativly, wait until wluke releases his search engine hack (no idea if he has started it yet though). I think he is working on including keyword density, alternative pages for search engines etc so would probably be better but the apache one is probably the best to get you started. INMHO creating static pages is very crude way to do it, server intensive, wastes space and is not dynamically updated.