intraspark 0 Newbie Poster

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/forums/forumdisplay.php?44-televisions
http://www.domain.com/forums/forumdisplay.php?96-cars

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

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And then the threads inside forum categories currently display as:
http://www.domain.com/forums/showthread.php?24-sony-tv
http://www.domain.com/forums/showthread.php?37-honda-accord

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

Please help!