Forum friendly url mod rewrite - clueless
 

I am not very familiar with mod rewrite rules except that they belong in .htaccess... so here it goes... I am looking to accomplish this:

Currently I'm using "Basic Friendly URLs" which show a forum at:
http://www.domain.com/forum/forumdis...?9-televisions
http://www.domain.com/forum/forumdisplay.php?9-cars

I would like the above two forum categories to display as:
http://www.domain.com/forum/televisions
http://www.domain.com/forum/cars

--

And then the threads inside forum categories currently display as:
http://www.domain.com/forum/showthread.php?24-sony-tv
http://www.domain.com/forum/showthre...7-honda-accord

I would like the above two forum threads to display as:
http://www.domain.com/forum/televisions/sony-tv
http://www.domain.com/forum/cars/honda-accord

Thanks!